A coconut would be good addition. You can find wood, coconuts, and other decor on Amazon or from reputable breeders like Pangea or Josh's Frogs, or you can look to your local pet stores or upcoming reptile expos. For example, I found this and this coconut hide(s) on Amazon for really cheap (I find that the ones branded for birds are a lot cheaper than lizard-branded ones although they're the same thing). Here's a reptile-branded digital thermometer/hygrometer with good reviews and this is one that records high/lows and can be attached magnetically or be set on the bottom of the tank (again, I prefer buying ones that aren't branded for reptiles). Reptile Expos have a lot of good discounts, I managed to find a discounted coconut hide from $10 to $5 at a reptile expo because the string untied. Also, pet stores may have discounts ever so often but I find more success shopping online as there is more variety.
Here’s the link (:
https://www.amazon.com/dp/B01H1R0K68/ref=cm_sw_r_oth_api_i_0Da6EbAYQNX7C
Tracking humidity is huge for this species. Here are two hygrometers from amazon that are cheap and reliable.
I use about 8 of these throughout my household, classroom and reptile enclosures and they've been consistent and reliable for years.
more baskets with wood ledges so they can get to the baskets. I have 3 sputnicks and 5 baskets with wood ledges from amazon so they can get to them all. i use basic dish rags in the baskets for bedding
another of my boys fave spots are these hammocks
https://www.amazon.com/gp/product/B07W1Z3G55/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1
ledges
https://www.amazon.com/gp/product/B08RYWQ4PG/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
digital thermometer. they should not be in temps above 80F for very long, its very easy for them to get heat stroke and die
https://www.amazon.com/gp/product/B01H1R0K68/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B01A1GZTKI/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0755H8BVX/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
You can get a sample tile from places that sell flooring tiles, they are smooth and no risk of scratches or cuts. You can put them in the freezer and then put them in the cage. Or just freeze a bottle of water and put it on the outside of the cage.
But it doesn't matter too much if he has more bedding. The bedding doesn't hold that much heat, comparatively. I would recommend getting a small thermometer for the room so you can see if it's getting too hot or too cold though.
https://www.amazon.com/ThermoPro-TP50-Digital-Thermometer-Temperature/dp/B01H1R0K68
https://www.amazon.com/gp/product/B07Q2KPDTD/ref=ppx_yo_dt_b_asin_image_o00_s00?ie=UTF8&psc=1
https://www.amazon.com/dp/B08TZWV8HX?psc=1&ref=ppx_yo2_dt_b_product_details
https://www.amazon.com/dp/B08GL54VQH?psc=1&ref=ppx_yo2_dt_b_product_details
https://www.amazon.com/gp/product/B07W1Z3G55/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B01A1GZTKI/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
for hanging stuff
https://www.amazon.com/gp/product/B01H1R0K68/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B07KCMJTN8/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B08RYWQ4PG/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
i also have cheapo plastic baskets ziptied to the sides and use plain dish rags in those for bedding. can find some nice cheapo baskets at walmart/dollar stores
my boys especially love the sputnik to the poin that I've just ordered a third one
I have a hygrometer & temperature display unit, about $10 on amazon https://smile.amazon.com/gp/product/B01H1R0K68
get an air purifier and also one of these
https://www.amazon.com/gp/product/B01H1R0K68/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
it could also be the bedding you are using. my boys won't tolerate anything but carefresh which sucks cause its expensive but every time i try to use anything else they get respiratory issues
if you're using wood bedding then freezing before use and using some kind of mesh bag to sift out excess dust would be a good idea