Look up Peach Pit Carvings. There are probably 2 dozen of semi-standardized folk art shapes.
Drill holes in them and thread them onto strings. Lovely.
you need to dry them out - you could probably do this in a LOW temp oven for a couple hours or leave them out in the sun for a couple weeks Then you need to drill a hole with a really small bit with a dremel Then polish with a fine grit sandpaper or decorate however you want
I have seen good luck charms made of polished peach pits. I'm not sure how those were made but I presume they were dried, then sand papered and a lacquer finish applied. To insure it didn't germinate and to add strength, you could drill a small hole into the center and inject epoxy inside. I suppose the same could be done with an olive pit but the smaller size is going to make it more difficult.
how would i polish or shine them and also keep them from sprouting or do they actually grow or sprout?
Well you use a drill what exactly are you in need of? L