Get back ot
Archive.org has quite a decent collection of malware, but hardly engaging enough to keep you busy all day. The MS-DOS games section is a wormhole that will take you back to Childhood. Whether it’s an arcade game or and adventure one that you associate your childhood with, they have it.
We tried the classic Price of Persia and it played as slowly as it did then. Your mouse becomes inactive and all you have to do is know the keyboard controls to the game.