I've been looking at trying to make the very thing out of water proof marine strip LEDs.... (I wasn't able to find/reconcile how to effectively power them... a AA battery pack is sold, but that is not waterproof...) There it is, in a nice little package at a super reasonable price with the sale. I ordered two of the blue ones. My only concern is that they are "water resistant" and out here they will have to resist a *lot* of water, but then again at $10, even if they don't last a long time it's not big loss.