Things to hang on the wall -- I want your ideas

Hang a Trojan Dispenser outside your dorm room. Not only will you be savior of the entire dorm, you could refill the thing with the free handfuls of condoms from the school medical office then charge $1 each. It will pay for itself 10 fold by Xmas break. It also let's the Freshmen ladies know where to come for safe sex.

http://cgi.ebay.com/Condom-Vending-Machine-key-LifeStyle-medicine-type-/110589416435?pt=BI_Vending&hash=item19bfa493f3#ht_500wt_1154

about $100 to start your endeavor