Duct Tape Flowers...

Also used foil tape, which turned out really cool...

Garden Wire, Bailing Wire, or any heavy Single Wire will do for the stem. You can get it at craft stores, or at any local hardware or farm & feed stores. You might want to put a layer of electrical tape under the duct tape where it meets this "stem wire" for good adherance. To make the flowers in the picture, just rip 3 inch pieces of duct tape, fold the left corner down at a 45 degree angle, leaving just a little sticky on the right edge, then fold the top right corner (which is now kind a pointish) down at a 45 degree angle to make somethin that kinda looks like a house, then roll this up and you got the first petal. Just make more and stick em on until youre happy with it... You just need to figure out how much to get each petal to bend down to make it look natural... make them real loose in the center then tighten them up around the outside...

Concept used below to make a tree...