Planet Bike makes a spiffy little light set I see a lot of commuters using up here. Don't remember the name of them, though.
There are companies which make active (LED lit) safety vests, but I don't know about rechargeable batteries.
Get a race-number belt and a reflective slow-moving-vehicle triangle, wear that low on your back. That's pretty standard among the randonneur crowd. Another option is an adjustable reflective sash.
Some companies use reflective piping and trim on their wind pants, some tights have reflective panels. You can always buy some sew-on reflective trim and add it to your favourite riding pants. There's a bunch of types available online from both Identi-Tape, and Seattle Fabrics.
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"I feel like my world was classier before I found cyclocross."
- Mandi M.