Yard sale season is quickly approaching and I've always found the best records at yard sales. Plenty of other tutes online but quick summary: put your record on a large heat resistant bowl (such as a glass mixing bowl) in the oven at about 200 degrees F. After a few minutes the heat will start to warp your vinyl, when the edges start to sag, put something heavy (like a can) in the middle of the record to form the bowl shape. Take the bowl, record, and can out of the oven and mold the record to your liking with oven mitts. If it cools before you've had time to completely set it, just pop it back in the oven for a few more minutes.