I mean, if I'm going to have to design the RSVP cars, map cards and reception cards in addition to coordinating printing of all pieces, then heck, I might as well just design the invite myself anyway!
So this is the compilation of the inspiration that Mr. B has officially approved. A frame of yellow/mustard colored pattern, with text in the middle. I also LOVE the fake-vintage-postcard-RSVP card, which I will totally steal. Just like the set in the upper left, but in yellow.
As a side note, Meg at A Practical Wedding posted an incredible site today [Invitation Consultants.com] that makes & prints invites for pretty darn cheap. Some are as little as $125 for 100 invites, and for custom printing, that's a deal. If I could get Mr. B to go for it, I'd totally do these kraft paper + feather invites in a mustard envelope. Hotness.