A classier kind of "hang in there" for modern times.
If I got one of these cards my day would certainly be brightened. What a cheery little crew of friends! Thanks anonymous future friend for sending me a note!
Do you chew on your pens and mangle them? It won't look quite as odd if it looks like you're chewing on actual candy.
There's something undeniably charming about chopping the corners off a rectangle and calling it futuristic.