decorated envelopes, mail art, lettering ideas
https://www.rijksmuseum.nl/en/rijksstudio/199652--entries-rijksstudio-award-2015-top-75/creationsmany nifty ideas if you feel like surfing today.
I am enjoying the Elizabeth series - and her expansive collection of vintage postage.
I like this idea, I have lots of older small denomination Canadian stamps that I would like to use but not enough to add up to $1.20 (US) or $2.50 (Intnl) without filling the front of the envelope. The talking stamp could be a large denomination stamp.