There are two random mail-in freebies available in even randomer (it's a word! Kinda…) states. First up is this. You're meant to send in six bottlecaps in order to get it, however the form lists certain states where that's not necessary:
AL, AR, AZ, CA, CT, HI, KY, ME, MN, MO, NC, OH, OR, PA, SD, UT, and WV
If you live in any of those states, then simply send in the form and you should get your glass by September. Next up is. Again, if you live in any of the states below, then print out and mail it in.
AL, AR, CT, HI, KY, MA, ME, MN, MO, NC, NJ, NY, RI, SD, UT, VA, and WV
Chances of me getting both of these while only ever using the pub glass: 100%
[thanks Eve and Florance!]