Okay, sorry for the day late response. But here we are.
So the strips I'm currently looking at are these. Now I havent finished my research on them, but I know the company sells little controllers for these. Basically like a tiny box that you can program the strips with.
https://www.amazon.com/dp/B01CDTEKAG/ref=cm_sw_r_cp_apa_i_fDRrFbB6M84QQ
Otherwise, any regular LED strip usually has about 16 colors with a remote. Some are sound activated, some arent etc. You just have to shop for what your desired effects are. The best place for recommendations if you dont wanna do research are the ones pinned at the top of this subreddit.
Now Phillips hue, which I'll provide a link for as well, are one of my favorites. They offer over 16 million colors to choose from and should be operable via your phone. The downside is that the strips are shorter in length and require extensions and a hub. Basically the core stip can have a certain amount of extensions(cant remember if it was two or three), but that means you'd purchase, depending on the size of your room, 2 to 3 regular strips, plus however many extensions, and a hub. Without the hub you cant control the strips. Sucks, but tbh I think the amount you can do with these makes it worth it to put up with purchasing a hub.
Lightstip base
https://www.amazon.com/dp/B0167H33DU/ref=cm_sw_r_cp_apa_i_VKRrFb4E4CQVV
Extension
https://www.amazon.com/dp/B0167H31CI/ref=cm_sw_r_cp_apa_i_XLRrFbV0VK905
Hub
https://www.amazon.com/dp/B016H0QZ7I/ref=cm_sw_r_cp_apa_i_xMRrFb44C8D80
*Note: These are all just Amazon links to the individual products. Sometimes you can find Phillip's starter kits that include the hub, most common being with their LED light bulbs set. So depending on how much your budget is and how much you like the product, you can try to get more for a cheaper price via these kits and places like ebay/offerup/mercari.
Now If were talking laser light. I'll send a link to the one I'm looking at myself, but these you really should put your own time into researching. There are a lot of different models and brands that do a array of different projections.
This is the one I'm looking at on amazon right now, but I'm still not set on it.
https://www.amazon.com/dp/B07195BNXF/ref=cm_sw_r_cp_apa_i_gRRrFbHF8JQ4S
Lastly, just as a extra addition. I bought this lovely "laser" and wave projector light. You can definitely find better ones on amazon, but I heard this one was silent running so I immediately grabbed it. I love it, but it has two issues for me. The laser "pulse" setting, where its supposed to slowly fade in and out like stars is choppy. Meaning it fades a little, stops, little more, stops, off, then on a little, etc. Second, the bluetooth sucks. It's not loud AT ALL. But the sound activated mode is super nice imo. Just turn it the lowest u can that it still functions, and play the real music louder somewhere else. Easy.
Here is the link to mine. However, amazon sells SOO many copys of this for cheaper. Just take some time to look through the features, customer reviews, and most importantly, customer videos/photos.
https://galaxylamps.co/products/galaxy-projector
Hope this super long nightmare of a comment helps your adventure to a wonderful cave!
1: You should probably go with some other VR headset other than PSVR, if I'm being honest. I like the controllers on the PlayStation better, but that's about it. Oculus quest 2 is a good, cheap and preferably alternative in my opinion.
2: Bought 2 of these strips, with one extender on both. That covers the whole backside of my 70".: https://www.amazon.com/Philips-Ambiance-LightStrip-Compatible-Assistant/dp/B0167H33DU
That being said. I bought this gear a while ago. Today I would rather go for the Hue play gradient strip. It comes in three alternative lengths. This is the link to the one I would need for my TV: https://www.amazon.com/Philips-Hue-Gradient-LightStrip-Assistant/dp/B08P2D215V
HDMI sync box: https://www.amazon.com/Philips-Hue-Surround-Entertainment-Assistant/dp/B086MR9XR8
Please note that in order to run any Hue lights in your home, you'll also need a hub/bridge to communicate with your lights. This is the bridge: https://www.amazon.com/Philips-Hue-Stand-Alone-Bridge/dp/B016H0QZ7I
And I want to state that you can probably find these products cheaper elsewhere. I live in Norway, so I just threw out the most convenient links I could find.
If you want color bulbs here are the Color GU-10 The white only bulbs are here in a 2 pack for the same price as one color bulb...White Only GU-10
You would also need a bridge to controls the bulbs from a smartphone or tablet. The bridge can be found here. At $56.00 though, you might consider getting it included in a starter kit for much cheaper along with other bulbs you might use. There is no starter kit that includes GU-10 bulbs.
Alternatively nowadays you can forgo the bridge and use one of their dimmer switches to act as the bridge. At only $20 that might be the way to go. I have no experience using the dimmer as a bridge and don’t know if their are any limitations compared to the bridge.
As a final note just be aware that when using Hue bulbs you never want to dim them with your current dimmer switch since it can damage the bulbs. Leave your current wall dimmer at full light and use the app or the philips dimmer switch only.
Well if I'm not mistaken then you can make Alexa voice queues. The music could be displayed using YouTube or Spotify (really depends on the Alexa version, think Alexa. 2 does that) and for the led, use a smart led like the ones fillips have (if I'm not mistaken) (which are compatible with Alexa).
So for the led you'll need (Phillips)
Might need smart hhb -smart hub (to connect to Alexa) https://www.amazon.com/Philips-Hue-Stand-Alone-Bridge/dp/B016H0QZ7I/ref=pd_aw_fbt_img_sccl_1/131-0880659-7806752?pd_rd_w=fkuLT&content-id=amzn1.sym.f353d175-26fc-4776-8298-842dab47b290&pf_rd_p=f353d175-26fc-4776-8298-842dab47b290&pf_rd_r=PWED1Z9M95A7RB0R7D04&pd_rd_wg=kAUSw&pd_rd_r=69482dc0-79ec-4dc3-9a4f-a9da94c40bb0&pd_rd_i=B016H0QZ7I&psc=1
Hope this helped