This thread caused the need for shopping. Went to Joanns and bought a bunch of card stock to make envelopes. Been meaning to do that for a while. First few are drying now. Not exactly a suite of engraved Crane's but it will do.
I like to make my own stationery too. I think it adds a nice personal touch, it tends to be cheaper, and it gives me total control over the paper I get to write with. I would love to see a photo of your envelopes when they're dry!