A couple months ago, Brian and I went to Costco to stock up on house supplies. Somehow, we ended up buying $60 worth of toilet paper. Maybe I was inspired by my 24-pack purchase of cans of chili.
Anyhow, we decided to split it evenly, and since I paid, the roommates thus each owed my $15. I owed Brian some money already, so we called it a wash, and Kolleen promptly paid me, which just left Noah. Now, $15 isn't really a sum worth calling in one's debts over, so he's been paying me back bit by bit, over the past few months.
Since Noah goes to Taco Bell at least 2-3 times a week (this week he's gone 5 days in a row), we've gotten in the habit of just picking up a Beef Baja Chalupa and bringing it back to me each time he goes, and I knock $2 off his tab. We're just about even - we're quickly approaching the 7.5 Chalupas it will take to equal 150 rolls of TP.
I love that we're bartering Chalupas for toilet paper.