I used to play with Duct Tape all the time, I was a Duct Tape hipster... I had a Duct Tape Wallet before it was cool.
Anyway I also made Duct Tape Roses all the time, I figured I would do so again, this time for the Bitcoin Community!
With shipping I'm thinking about 1.4 BTC per Rose (It is actually a Pen as well so you can write with it!). If you want patterned tape it'll probably be about 1.6 BTC or so as the tape is more expensive.
I only had some Hello Kitty Duct Tape readily available so that is what I made my first one out of. I can get pretty much any solid color of Duct Tape, so don't hesitate to ask for specific colors. I can also get a cheap vase and Duct Tape it up and make a bouquet of Roses.
Anyway Pics (not many for now)!