I make a sleave and recycle cardboard. I love the idea of the plastic canvas but am trying to be frugal these days and make every peeny count ;)

Ditto!!

I like this idea too! Have to check those out.

I have used the plastic thing that comes in the bacon package.

i have used the plastic corrigated "for sale" or "political signs" cut up and wrapped in matching fabric..( i stable it on the back side...

I use foam core, it's rigid and holds up real well

Have you tried that plastic mesh stuff (which the name of it escapes me right now) ?? Folks use it to cut into shapes and then use yarn or whatever to create patterns??? Okay - if you have any idea what I'm talking about (LOL), use that ! I've used it in purses - made a "cover" for it and when it comes times to wash the purse, remove it - can even take off the sleeve (make the sleeve with one end open of course) and wash that too. Works great! Cheap too.....

I use 1/4" foam board left over from making my minis. Problem tho. I have it in a sleeve at the bottom but it keeps shifting and my stuff ends up underneath it. Can't decide whether to velcro it in or stitch down both sides leaving the end open to insert the FB. Suggestions please.

One quilting teacher friend uses the vertical blinds from a repair set. Her hubby cuts them to the right size. I have a few purses made from her pattern with these glued into the bottom then the lining sewed up and they work great!

Yes, usually, sometimes if you need it stiffer you can use 2 but I use 1 layer. You can also buy the stiffer plastic canvas...it is way cheaper than the stuff they sell for the bottom.