Nothing is wrong with an aluminum can..That's myth. Maybe over a LOOOONG period of time..but not short term.

If you can't buy zags just use bubble gum wrapper..scrape the soft foil off and twist one up..you need to papers though..

don't use plastic...that'll fuck you're lungs up more than aluminum

if the plastic melts and evaporates and gets into your lungs..that's bad news