I am always a little baffled by the congratulations. I'm touched they think I'm talented, of course, but congratulations are...I dunno...something else again. You congratulate people on graduating or having kids or buying a house or succeeding at something, not for just...y'know....existing. I mean, I'm grateful for the praise, it's nice of them to take time to say anything at all, but...the phrasing rings oddly to my ear. I'm not sure if it's an English-as-second-language thing--that's definitely a nuance, god knows--but I know I've seen it more than once.
On the other hand, I can see a lucrative market for congratulations-on-your-existence cards. I've always seen greeting cards as basically a quick way to say "I acknowledge your existence!" anyway, so we could just strip away the trappings. Oo! And a spin-off of "congratulations-on-your-continued-exist
The possibilities are endless, AND tacky! What more could one want?
See, this is the crap I think of when I'm running off prints and can't do anything art-heavy.