I found out about this laptop stand on this subreddit, someone else was using them for their flightcase rig. I had to have one, and I can say they really deliver! Super sturdy, fully adjustable angle, can be tightened down with included hex key if you want it to never move.

https://www.amazon.com/dp/B091H23GR3/ref=cm_sw_r_awdo_DAVM6K4VJC76RJWCB3S1?psc=1

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I've got the base sandwiched between the stand (Jamstands) and keyboard (SLMKIII). Plenty sturdy enough for my needs! Love this minimalist look. That red MIDI cable is a tad short though. Got this rig set up and immediately bought a 2nd laptop stand for the other side of the keyboard :D

https://www.amazon.com/dp/B091H23GR3/ref=cm_sw_r_awdo_DAVM6K4VJC76RJWCB3S1?psc=1

I've been enjoying these a lot, great quality for the price. They can be adjusted to be very low to the table surface, or raise high up above a keyboard. Sturdy enough for heavier gear too.

One of these if you don't mind it being a tad wobbly, two of them if you want it to be rock solid:

Besign LSX5 Aluminum Laptop... https://www.amazon.com/dp/B091H23GR3?ref=ppx_pop_mob_ap_share