Tireflys--Anybody ever used these?

Their other product called "microflys" stay on and aren't motion activated (so says they're web site). In anondized aluminum cases.

Note that these are simply a blinking LED, battery, and molded case that screws on to a valve stem. Easy enough to make yourself. Amazing what some people will get patents on. ;)

-John DeMar

Ya know, for all the things I look at and see 'rocket part', that didn't occur to me. Interesting thought!

Joel. phx

Then there was the ADOT yard I could see from the overpass. What scale S-V could I build from a 12' diameter steel drain pipe?

I just picked up 124 similar units. I'm testing one right now that has been flashing red and blue since yesterday. They're

You can get similar lights that don't require motion activation. They are sold as novelty party earrings, clips, etc.

I've got a few of these around...they are too small to fit inside a bt-5, but will fit a bt-20 or bigger.

Stephen

"Magnetic body lights" are cheaper.

With minor modifications, they clip onto bare li-ion cells:

(bare Li-ion cells are somewhat dangerous, and using them as shown in these photos will happily discharge one to the point where it will never charge again. That's fine with me, as I risk the burns/etc to remove them from 'dead' laptop packs. It wouldn't be so fine if you paid typical list price for new Li-Ion cells.)

BillW