Post who’s cards? Postcards are a great way to let people know you’re still alive. Send a nice hello once in a while.
You know about post cards right? Small rectangular things with a picture on one side of a sunset, or perhaps a monkey. You place a stamp on it and it says something cute like “wish you were here”, “thinking of you”. OK good now since we are on the same page don’t use anything like that, unless your on vacation I suppose. What we are talking about is the reminder type post cards. Reminders of what? YOU! Reminders about you, what you offer, what you bring to the table. Could be just a follow up like a larger version of a business card to say “thanks for the show, had fun working with you”.
You can have some made up, very similar to the ones you see advertising for clubs and comedy shows. The shiny ones with the colorful artwork on them. Then on the back add some personal note from you saying whatever you think would be appropriate like “Will work for applause” something out side of the box but appropriate to the topic. Perhaps “available to laugh” “have guitar will travel”, “when can we discuss another show”. Whatever the topic may be just make sure its building on things you have already established through personal conversations. Post cards are an add-on something to make you just a bit different. Don’t use them like a blunt force instrument, a stand alone advertisement, it wont help you that way.
So style now, sky is the limit really. If you can find some that fir what you are looking for in the card store then go for it. Grab em up. Or go the other route put some thought into what you would like on it and have some made up for just this purpose, to add to your outreach. Plus you never know the mailman or lady might like it so much they show everyone in the post office. If its really good and makes them laugh it might even keep one of them from going postal.