Books too,can make a lot from certain books found on the bottom shelves of op shops. Theres loads of crap but if you got the time theres a few gems you can make 600% + on. Boxing books get put there by women who've lost their husbands I got one rare one on Les Darcy just the other day also picked up one called from Russia with gloves built around Kostyas photo album and earlier this year I got the twelve greatest rounds of boxing by Ferdie Pacheo md.The fight doctor. Look for Old collectors service manuals, technical Sea fearing stuff,Masonic or other rarities like that and you cant go wrong.