I knew a guy who made a lot of money selling bracelets at Warped Tour.--Answer1:marijuana and drug related stuff posters pipes black lights lighters and all that sort of stuff or water bottles..--Answer2:Think about hats. Look at how many musicians are wearing fedoras and newsboys plus cowboy hats especially for country concerts. Fans like to look the celebrities. Most of the crowd is young so also consider trendy chokers and necklaces. Hematite fits into this category..--Answer3:Pendents, Bumper stickers, koozies, key rings. flags, caps & best of all Toilet Paper.