This postcard arrived in my mailbox recently, from a Postcrosser from Osaka, Japan. She wrote that she was looking forward to cherry blossom time, which sounds very beautiful. How wonderful is it that she sent me a a delicate image, and added two stamps featuring cherry blossoms on the reverse?
Modifying my stamp rant a bit, could I do something like this with international air mail stamps? No. With domestic postage stamps? Maybe, if I buy Post Office products described in a previous post. Kelp Forest postcards, with added Kelp Forest or lighthouse stamps, for example.