I'm looking for any ideas for direction towards a prop or method for an effect I wish to perform. The idea would be that a piece of art is "commissioned" by a spectator and the art they order appears in a frame or poster tube on stage. Ideally as a poster that could be given away to the participant. I am finding production boxes or tubes for silks, but I don't think something like that would be very magical for a rolled up piece of paper/cardboard.

Any suggestions would be greatly appreciated

The frame is definitely the way to go as it is much more visually appealing than an item in a tube. Plus it is super easy to do with classic method. Can't disclose in public forum, but I will PM you.