I use stamps for most of my PBS postage, for both convenience and because I've always enjoyed getting packages with an assortment of stamps on them.  Sometimes it is a tight fit using forever stamps and lower denominations.  I was at the post office today and they have a new commemorative stamp package of 6 - $2 "Inverted Jenny" stamps, that are really nice and will leave plenty of room for other stamps on a <1 lb media mail package.  I bought a pack.

Also, next week (November 19, specifically), USPS will be releasing their Harry Potter forever stamps.

"Harry Potter" will only be available in select post offices (larger ones) next week.  Smaller offices like mine won't get them until December, and we won't be able to order additional ones beyond our automatic distribution until January.  But I believe they will be available at usps.com, or you can call 1-800-STAMP-24.

the coolest thing about the new Inverted Jenny stamp is they printed 100 sheets right side up and randomly inserted them in the packets, so if you buy a packet, you might get a highly collectable one right off the bat