DIY Birthday Balloon Surprise from She’s Crafty here. Fill a sturdy box with lightweight balloons filled with candy, cash etc… More details at the link.
DIY Penny Countertop Tutorial. You could use this tutorial for bottle caps, coins, etc… on damaged tables tops using epoxy. What is good about this tutorial is that all the project mistakes are listed to, saving you from making the same ones. Tutorial from Domestic Imperfection here.
EDIT: I got a phone call from my mom asking if it was legal to do this. Lots and lots of info on the internet says both yes and no. See From Ehow here:Paper currency is legally defined as a “national bank obligation,” and as such, defacement is regulated by statute 18 USC 333, which states, “[w]hoever mutilates, cuts, defaces, disfigures, or perforates, or unites or cements together, or does any other thing to any bank bill, draft, note, or other evidence of debt issued by any national banking association, or Federal Reserve bank, or the Federal Reserve System, with intent to render such bank bill, draft, note, or other evidence of debt unfit to be reissued, shall be fined under this title or imprisoned not more than six months, or both.” The key here is “unfit to be reissued.” Drawing a moustache on George Washington does not render it unfit to be reissued; it is still easily identifiable as a dollar bill.
You could do a different shape than a tooth and use glittery money for more things than the Tooth Fairy!
DIY Silver Quarter into a Ring. This does require a power drill/dremel if you don’t want to spend hours hand drilling it (although people have). I may never do this, but it is so cool knowing it’s out there and people have done these for wedding bands :) Tutorial from A Law Student’s Journey here.