Journey vs. Destination

I suspect that these this exist. Or that I could build them if they don’t. And yet, I’d rather someone send me a link where I can just buy them.

• A tiny board that I can hook to my computer to download sounds, then hook to a button + battery to play them. My neighbor down the street has some action figures that would be hilarious to mess with. Should run for a long time off a coin cell battery. Also, possible bonus points for making it BTLE updatable (but cheap is important too so it is only possible bonus points). [Update: Adafruit just announced what I want: Audio FX Sound Board. It is a little bigger than I’d hoped but everything else is pretty good. I just hope they get on with the rest of my list.]
• A USB rechargeable ring of battery, 3.3V and at least 350 mAh. Would be nice if it was already the right size (and shape, with connectors) to plug a MicroView into. And by “ring”, I mean, should fit my index or thumb.
• An LED that follows along with music, can tell me if my singing along is sharp or flat. Must work in the car, with the radio. Second version should work in shower, no external music, just whether I’m in a key (any key).
• A handheld microphone that wirelessly (BTLE? iphone dongle?) connects to my phone to be used in live podcast recording. Also, an app with few bells and whistles but the ability to reliably record. Bonus points for an accelerometer in the mic that causes two channels to be recorded separately, depending on angle of mic.
• 2 and 4 AA battery holder with (very efficient) power switchers that provide clean 3.3V power.

Let me know when you finish or find them.