a tip from the PostCrossing Blog, I sent one of my snake-themed postcards to the Singaporean Philatelic Museum as a contribution to their new exhibition Snakes and Ladders. They open a new exhibition at the beginning of every Chinese New Year. The exhibition runs from February to September 2013. if you have a snake-themed postcard, you can send it to:
Singapore Philatelic Museum
23B Coleman Street
Make sure to include your return address. The museum will send a postcard back. I received mine today, so it's not an April Fool joke.