I save plastic bags and empty containers and usually can find a good use for them. I try to get every drop out of any bottle I use---shampoo, dish soap and hand cream. I hate to throw anything away because I figure I will use it sometime---therefore I save little scraps of fabric, little cardboards from fat quarters. Now my house is very neat and not like a hoarders---I just save the things that are useable---not crazy stuff.
Hubby and I save all our food scraps and peels to bury for fertilizer!