Don't put oil in the bag. Oil tends to actually ruin orings after a long time. Buna are less likely to be ruined by oil, but Urethane orings definitely absorb the oil and lose elasticity.
Just leaving them in a box or a bag, out of direct sunlight and out of crazy extreme temperatures is more then sufficient. You'll probably lose the orings before they go bad.
"Originally posted by EastCoastAngel: He came up under gen bolder....I thought it was a ****ty chick....turns out I was half right....he status updates like a drunk whore"