Another great idea for any classroom is a token economy and some great play money. I give my play money out to my 7th graders when they follow the rules, use their social skills, and do excellent work. Yes, 7th graders really do like it! Sometimes they use their money for hints in a game we are playing. Granted, we play very competitive games like The Amazing Science Race in my class so this is important. Other times I just get a bunch of prizes and do an auction where the students raise the price on the prize. This is very fun!
I started making my own money. I think I should have kept going with that idea and put the templates on sale at Teachers Pay Teachers! Anyway, I made a printable money file and then put crazy pictures of myself on the money. The higher the denomination, the crazier the picture. I added a saying like "Collingwood's Cash" or "In Collingwood we trust" or something equally goofy. I like to mix up the money every quarter, however. I find that middle school kids get bored of anything that is repeated too much. Here is a free money template:
It can be found at the site: http://www.2020site.org/templates/Play-Money-Template.html
Here is a seasonal money that I like to use. This one is not free but it is pretty cheap really at $3 and editable.
The Paperglitter site has many cute play money templates which would work in middle school and primary grades. The Christmas money can be found here:
If you want to use money that actually looks like real money you may want to check out this site:
These are free printable money sheets for US dollars and Euros which are very cool.
You can print simple but colorful money that looks like this: