Literally, the first phrase I wanted imprinted in my kid's brain from birth was "plastic bags not a toy."
I don't think this is a result of my own traumatic childhood memories, since my parents did not--to my knowledge--install Creative Playthings inflatable plastic crib bumpers in my bed.
Though I do remember falling asleep in the backseat of the Buick and waking up soaked in sweat, my face stuck to the dimpled vinyl seat covers from the Wackenhut catalog.
Creative Playthings See-Thru Crib Bumpers, starting bid $10+10.40 s/h, ends Jan. 18
If you just want your kid to sleep with one plastic bag, another CP Inquarium in-crib aquarium [ebay]