I don't know how many people have tried this, but when I'm bored of all the familiar things all around me, I like to try some mind tricks. If you focus your thoughts well enough, you can trick your mind for a little while into seeing familiar things as if you're seeing them for the first time. Or maybe you're not really tricking your mind, but just realizing how bizarre some things really are. Either way, has anyone ever had some fun with this?
I like to have fun with this trick when I'm bored. It works great with hands and feet, or even bigger things like trees and their shape, and how they grow. You can see how unusual anything really is if you think hard enough about it. The shapes of things, or what they mean to us as human beings, the way things were created by nature or the way human beings created thing. In a sense it's almost like questioning things and all their detail.
Anyways, another thing which this relates to is language and words. If you repeat any word about 10 times, you'll start to be more aware of how strange it really sounds. I think this one happens to everyone though, and it makes me laugh. I've always wondered how strange the English language sounds to somebody who isn't familiar with it!