Great photos, as always offworld! >thumbsup<
I live in a very urban area, and have only a small concrete curtain at the front of the house, but use containers to grow pollinator-friendly plants. Things like nasturtiums and french marigolds are cheap and cheerful and easy to grow from seed, and the bees seem to love them.
When I'm better at being outside, I'll try to get some photos of the bees in action (although the photos won't be as good as yours, offworld!) One day last summer, I counted 10 dfferent bee varieties visiting the flower containers outside.