Just the facts: I buy an old Wrangler jeans advertisement off of eBay because it is vintage, western, and funny/weird.  Needs a frame.  I go to Goodwill and find a $3 framed picture that I think will work.  Take it home.

Nice rustic frame, clear glass.  I disassemble it.

Bonus: The mat boards come apart and one fits my advertisement.  The little cut-out at the top even mimics the southwestern detail on my fireplace.   Reassemble and pow!  New/old picture to hang.

Extra bonus: I recycle the old mat boards/picture and keep the unused 30 cents in stamps!  Happy dance ensues.