Just wanted to let Deana, Kristin, and Pat know that I mailed your blocks this morning and to expect a Saturday delivery!
FWIW, I’ve found that thick envelopes cost more to send so I get 9 X 12 inch envelopes at the Dollar Store and fold the blocks into thirds, layering them to overlap each other. This keeps the thickness factor down. I have extra stamps in varying denominations (.49, .20. .10, .02, .03) available plus a big help is a digital scale I bought years ago. The envelopes usually weigh less than 2 ounces and are less than 1/4 inch (make sure to flatten the envelope to get out the air before taping shut!) bringing the postage to $1.20. I hate standing in line at the PO.