HOW TO – Make a Megaphone Helmet
A fun instructable from talbotron22 “Here I show how you can very simply modify a megaphone to accept 1/8” line input from an iPod, and mount the megaphone on top of a motorcycle helmet. The resulting “Mega Helmet” delivers the maximal aural stupidity allowed by law…Go play softball wearing the helmet. It is very good for antagonizing the pitcher, and trash-talking in general. The helmet allows both for amplification of your voice, and playback of mp3s from the iPod.” Link.
Nick writes “Here’s a great collection of homemade musical instruments and instrument mods from Dennis Havlena. Most are cheap and quick, and include sound samples. I particularly dug the simplified hurdy-gurdy.” 
Marc writes “This is a well detailed plan of building “the ultimate gaming table” for role-playing and board games. I appreciate the details like cup holders and dry erase boards as well as the layout of the room itself.” 
Diy.sometemple writes “This is an extensive collection of automated and programmable musical instruments designed by the logos foundation. There are lots of photos and wiring schematics and the like. You can get lost on this site for hours.” 
“These transit tokens from New York were discontinued in 1980 and have now been recycled into cuff links, courtesy of their designer Ward Wallau. He spent 11 years petitioning the NY Transit Authority before they finally gave him permission to use them in his jewelry, making them truly special. These unique cuff links are also available with recycled transit tokens from Boston, D.C., San Francisco and Chicago.” These might be fun to make, perhaps out of arcade tokens… 
NotBobVilla sent this along…“A Sheetrock lift I designed/built on a job site of a 6 story building I renovated. I built 2 of them they worked so well. We also had about 30,000 SQ/FT of ceiling to put up. Typically when someone talks about a sheetrock lift its 2×4’s fashioned into a Tee. With 2 to 3 guys struggling to screw it to the ceiling. This is a one man operation. Material costs $50-60 bucks 4-6 hours build time. We could have bought one but weres the fun in that? It works just as well or better as lifts costing $600+” 
Chris writes “Getting your hands on an good sector panel antenna is not easy – if you live in Saudi Arabia. Dan does and hence did he need to build one himself but it took him 8 months to find a page about the Franklin array and that became his starting point when he developed his 2.4GHz 14dBi sector panel.” 