File this one under ingenious devices you've always needed but no one was crazy enough to invent--until now. For all those with chronic sweaty feet resulting in dank shoes accompanied by a less-than-pleasant odor, L.I.D. (Life In Detail) now offers the Eco Shoes Dryer. They look like common shoe trees but actually contain silica gel drying material powered by an internal battery.

When all the moisture has been absorbed from your shoes a tiny indicator window turns from pink to blue. When not in use, you can recharge the dryers by plugging them directly into any normal electrical wall socket. You can obtain your slice of dry foot heaven for just 2,980 yen ($26.85) here.
— Adario Strange

Via Life In Detail