I did some digging in some old boxes from when we moved (you know how it is: You moved 3 years ago, but the majority of the stuff is in boxes still) looking for my books, when I found a box with some of my and my sister's old baby stuff.
There wasn't much: Just a few articles of clothing, some toys and books, and an old glass bottle, probably 30 oz or something, with a latex nipple. It was actually my sister's old bottle, but it's still a neat find. Problem is, the nipple is pretty old and is kinda hard.
There aren't any major cracks in it, but it's still a bit stiff. Is there any way to restore latex to it's previous state? Would a mineral rub, or oil work? If not, can you still buy latex nipples?