Add a GPS and a few propellers to vapes so they can fly themselves directly into the nearest river, lake or (as a last resort) ocean once they're empty.

I know you're joking, but it seems like a great option for IEDs. Cheap, hard to trade (might even come with a patsy's DNA preinstalled)

Why wait until they're empty, let he fish vape I say!

Self-smoked salmon

If the eels get car batteries, the fish can have a little vape, as a treat.

It seems like depending on the dose, Zebra Fish rather like it.[1]

[1]https://www.sciencedirect.com/science/article/pii/S027858461...