I was at walmart today (not by choice) and I found a blinking LED for roller blades, it's a Razor Flashing LED Light Pod. It comes with two flashing LEDs and batteries with an on/off switch and a wire that would be real eazy to cut and solder to the on-off switch on the top of the trap. All this for just 3.50 in the clearance isle. Just thought I'd share

I'll have to check that out.

they have similar ones at radio shack for around the same price.