I sit in a classroom, quiet and small, But when you turn me on, I grow big on the wall. I shine bright pictures for everyone to see, What kind of machine could I be?

All these can have this word follow them, Rain Lemon Gum Dew Egg You can also do this to many items, usually on accident. Your parents typically tell you not to do this to breakable or important items.

Press me, pin me, thread me through a hole, I'm a magnificent fastener if that is your goal, If I'm on the smaller side I can be a little tricky, But hit the big red one of me and things will go south quickly!

I'm named for my number of legs, But the word refers to feet in Greek, I'm not a bug so don't be tricked, I'm useful gear for camera geeks

I might be a man I might be a house I might be a hat I might be a bed The only thing for certain is that I come from the ground