What types of large plastic sheets can I draw/paint on? I typically draw on Stonehenge paper from rolls, cut size: 48" x 60+". I like working big but it's horribly expensive to frame anything that large so I have been looking into various plastic drafting films which are less fragile than paper and can be exhibited without framing.

Can anyone suggest types of plastics I could use? I have also been wondering about rigid sheet plastic too – that will stand up to being installed, moved, etc. That would be ideal. I use oil stick (which dries in 10,000 years, apparently), so I would likely have to adjust my medium.
Yupo, various polyester-based drafting films and Tyvek are some of the options I've found so far. Each has unique characteristics and all are (apparently) archival.