I'm a member of the never-sent-on time club so I bought a stamp by Stamp LaJolla many years ago that says ...
"It may be late but it's hand-stamped!"
When I can find it (a whole other story LOL) it goes on the back of nearly every envelope that gets postal.
It can be viewed here (scroll down a bit):https://www.************.com/web_sto...i?product=cute
ETA: I couldn't find anything recent from or about this company so it may no longer be in business.
Tina aka TeeGeeDee