I’ve never seen a hard modern monitor. They do make hard plastic TV/monitor screen protectors. A nice movable mount, the handles suggested, and a screen protector might bring you close to the setup you need.

There’s an official conspracy theory?

I’m more interested as to why you have a cottered crank from a bicycle on your counter. It looks like it has been cusomized into a tool with a little blacksmith work. What’s it do?

Low end bikes like that just don’t have much value used. They are generally considered disposable. Still if it is in good ridable shape you might get $50. Some times you cant give them away… Used helmets are iffy to the buyer. You never can be certain they are in good safe condition, even if they look nice. A nice camelback might be worth more than the bike and helmet!