I'd like to make something transparent and colorful that looks like fireworks to have come out the top of a cake. Any suggestions on what to use? I was thinking a gelatin thickened to the consistency of a gummy bear, but I don't have a mold. I was also thinking about glass candy, but I've never worked with it and every recipe I see says to drop it and crack it to get it out of the pan once it's done. That's not the effect I want. I want to be able to pour it into a 'burst' shape with a wire in the center of it, but I want it to just peel up without breaking, obviously. Anyone have any suggestions on how to get this effect?

not done this myself, so this is just a stab in the dark, but I feel like I have seen this done on some Food network challenge, if you pour the hot sugar onto a silpat and shape it while it is still warm you might be able to get what you are looking for.

aluminum foil

coated liberally with oil or veggie shortening

pour

cool

peel gently (like doing royal icing)

---OR----

if you have SILPAT or similar -- use that instead of aluminum foil.

don't grease

pour

cool (even freeze to get maximum release)

peel off gently (have to flex mat backwards)
(an offset spatula can be used to gently encourage release)