Another idea is a container for the computer. The container can of course be destroyed easily but then you will at least know they did something with the computer. But you would need a container that the evil maid can't go get a duplicate of or have one manufactured so they can replace the container after destroying original one.

There was an article [0] posted some days ago, they reccomended a transparent container and a mixture of red and brown lentils, and work just as with the glitter nail polish.

[0] https://www.anarsec.guide/posts/tamper/