Just a basic bee waterer to keep your bees hydrated while they are trying to find their own source. Throw some pebbles into the center of this to give the bees something to stand on while they drink.

I use a 1 liter bottle. A 2 liter will still fit, but I think it might be too top heavy. Try it and report back.

Use a plastic that can sit outdoors. Also, I have no proof of this, but I think it is possible that color matters, as some colors might actually attract bees better. It might be worth doing some research on this to help you choose a color.

I've also included STL files for a bracket to mount this to vertical surfaces.