A big thanks for all the great support and conversations at Seedy Saturday!
Here are some links I promised to post:
How to make houses for NATIVE bees: http://www.xerces.org/wp-content/uploads/2008/11/nests_for_native_bees_fact_sheet_xerces_society.pdf
How to make a bumblebee box: https://www.youtube.com/watch?v=DYKAvRsS3uo
Two places to submit your photos of bumblebees so scientists can track their populations:
1) Bumblebee Watch: https://www.bumblebeewatch.org/
2) Great Canadian Bumblebee Count: http://foecanada.org/en/issues/bumble-bee-count/