If you are sending me a card, and would like to receive a reply, tell me you want a response, and then write an address clearly so I can write back.
I would be excited to get:
retro style travel posters (on a postcard, not actual old card, but a new one with a reprint)
tea, cards about tea
Moomin, Tintin, Asterix
architecture, (structural, engineering, technical drawings too)
cards printed by Tushita, Nouvelle images, Graphique de France, Inkognito
Quentin Blake, Sempé illustrations
antique botanical drawings of flowers or plants,
tidy and neat things
fountain pen pictures (if you have those Kaweco post cards, that would be great)
something technical or technical-looking (electrical schematics, diagram type illustrations)
art museum/picture of artwork you like, and explain why
nice postage stamps ( I appreciate it when someone puts thought into choosing stamps for me.) But I collect stamps about Space, Artworks, technical/science topics, and scientists.
This is just a list of wishes, if you don't have any it is ok to send any card, if you take the time to write a good message.
Please, no glitter. Save it for somebody else.