Random collection of stones/crystals found in a garage

Hi, so I found these in my father's garage. I have no idea what they are, I think one of them might not even be a stone but maybe a fossil. Any help is appreciated!

http://imgur.com/a/RpK41 - not that heavy, not that light. doesn't really seem like a stone?

http://imgur.com/a/QMKce - pretty light, doesn't have a shine but not as matte as it appears on the photos

http://imgur.com/a/BBzwh - small, light, shiny, is this a fossil?

http://imgur.com/a/TteaW - light

http://imgur.com/a/4GMWg - very light and shiny, smooth surface

http://imgur.com/a/AXviV - not that heavy, I thought maybe very rough amethyst/quartz??

http://imgur.com/a/bF29w - seems like a "normal" stone except for the tiny glimmers and shiny spots

http://imgur.com/a/nEQWp - light and no shine

http://imgur.com/a/JKQVR - tiny & shiny!!

http://imgur.com/a/f18sr - not very heavy, the glimmering parts have a silver/metallicy-like shine to them