The Blue Man Persona: All that is need to complete the Blue Man is a makeup kit, black clothes and shoes, and blue rubber gloves.
The kit can be purchased from Mehron. Comes complete with spirit gum adhesive, greasepaint, bald cap and powder. ( They create the real makeup for BMG, but it is proprietary to BMG. This color is VERY close though) Order here for a reasonable price. Blue gloves can be found in the paint section of hardware stores. There you go! You're now a Blue Man. Just be sure to walk around silently, curiously poking your nose into your surroundings. You are sure to be a hit with all present!
The Trunk: Just plug in a TV to the back of your car and play a section of a BMG performance! We had our candy, along with some souvenirs from a show that we had been to for "inspiration". Pictures and glowsticks complete the ensemble. :)
The Drumbone: This one was a little tricky. A quick internet search will yield various plans for Blue Man instruments. The main components were PVC, pop rivets, a sheet of natural rubber (found online), and screws. Get yourself a good drummer, and you're in business!
No BMG performance would be complete without some "Blue Man Group-ies", either! If your goal is to impress those around you, look no further! These guys are always a hit! Be sure to stay in character too!
Please take some time to vote for this in the Epic Costume Challenge. Thanks!