OK, I was trying for cheep and fast, and here is what I came up with.
I used cardboard cut out 12 circles glued them in sets of 3 cut out a 2 inch dia. hole in the center of each to run a dowel thought when it is all together.
I made the skin two thicknesses of card board.
I used hot glue to place all the circular spines.
reinforced everything with tape, then covered the hole thing with a single layer of felt.
I glued the felt to the card board using spray adhesive.
Then cut the pattern I wanted to put on out of the same felt but made it 3 layers thick.
I used rubber cement and spray adhesive to keep it in place.
When I had the design finished I coated the whole thing with fiberglass resin.
It sinks into the felt and hardens up fast and very strong.
My plan for making it heave enough to work is to fill it with sand when I get to where ever I want to use it, that way I don't have to carry around a heavy cylinder.
You can check out some pics of what I've been doing at;