I showed you how to make a stealth shelf before but that one was kind of a pain in the a$$. Here is a quicker simpler way to make one. I used a different lock on this one too.

Slow open air spring : https://amzn.to/3E43j0q
Motion Sensing Light : https://amzn.to/3m1rGG5
Hinges : https://amzn.to/3FnwFrE
RFID Lock : https://amzn.to/3JwhwHQ
Magnetic Locks: https://amzn.to/3b37AVm
Foam : https://amzn.to/32Ua1cJ

I found the foam on Ebay under the description
Customizable Polyethylene Foam Pads for packing and crafts, 1.5 in