Does anyone have pictures of their mason bee setups? Below are a few of mine. I use bamboo poles cut to 6" lengths and drilled out to 5/8" inside diameter. I've been using paper liners that are commercially available but thru experiments I've found it's easier and just as sanitary to do without them. You just need to clean them the right way.

The other type of setup I have is a cedar constructed box that I fill with cardboard tubes with paper liner inserts, the stuff from Knox Cellars. I also put copper-sheet roofs on them for rain protection. Or sometimes just more cedar. I really like these boxes and I have quite a few of them. They're attractive and fun but I want to get away from purchasing paper/cardboard tubes and just go with the bamboo.

Here's my pictures, let's see yours.