For those of you who like homebrew devices for the Apple II, you may be interested in Nishida Radio‘s items.
Nishida Koichi, from Japan, builds and offers the following:
- an Apple II USB joystick adapter,
- an Apple II, II+ and IIe USB keyboard adapter,
- SDISK II, a Disk II emulator working with SD cards.
 The projects can be purchased as DIY packages or assembled. And half of the price will be donated to the Tohoku Kanto Earthquake charity program.
Discover Nishida Koichi’s great items at http://tulip-house.ddo.jp/digital/.