OT looking for recommendations about an inexpensive portable lightweightvideo screen

[Rick Walker <looppool@cruzio.com>]

I want to begin projecting my lo fi looping video efforts at shows that 
may not have
a screen in the venue.

Does anyone have some recommendations for very lightweight portable
screens that I might purchase (and good places to purchase it from)

Budget is consideration and I'd love advice on specific things to avoid 
as well.

thanks,  in advance.

Rick Walker