Multi-talented businessman, woodworker, kite flyer, and yo-yo modder, Eric Wolff is a force to be reckoned with. Another Area 51 talent, he judged the World’s Yo-Yo Mod Contest for several years. He was involved in the development of various forms of response systems, and created yo-yos made from exotic woods. Probably his most unique innovation was the creation of a yo-yo dyeing technique he called Organic (not the same as organic yo-yos today). The method was always shrouded in mystery, but as I recall it had something to do with high pressure and a microwave oven. 
Here’s a sample; post your own if you have any: