I needed some thank you notes for gifts our little one has recently received + came up with these very quickly ...
I used this free traceable font ... he's a little young [2.5 years] to do it by himself so we traced it together + then I let him add his own touch. I then printed the address on the other side, folded the note + enclosed it in a standard #10 window envelope [inspired by Kate Spade] + used some leftover stamps from our Christmas cards. Done in 10 minutes!
In case you might be interested, I've attached generic pdfs below for download. Quick printing instructions ...
-- Print letter on 8.5x11 paper [I used some 80# textured stock]
-- Flip over + print address on other side
-- Fold into a tri-fold ... and done!
Download Thank you letter
Download Address template