the sand bees won't need any bee hotel :)
as long as there's a hole
both of these got really full house now
so they're filling the gaps, too
I was surprised to see clay on the narrow sides of the holes
and they're sleeping in the gap between those holes, too
I really have to go buy some more now hahaha
I have also seen a bit of tree trunk with many holes drilled into it as a bee hotel. Quick and easy to make yourself, but it won't last as long outside. Still, could be useful as emergency lodgings 8-).