I just bought
www . vapingpetition . com - it redirects to the petition at change.org (if you're not seeing it, give it a few minutes - I literally just bought it a minute ago). It expires in a year, but I highly doubt we'll need it that long.
NOTE : I only got this to help out with printed materials, I strongly suggest everyone continue using the change.org link for online stuff because it is so recognizable. And you don't have to use this domain for printed stuff, it's just an option for a lot shorter (and easier to remember) link to put on fliers and business cards - if you want to.
If you're really short on space (business cards?) you can also drop the www and just put vapingpetition.com - that's the main reason I bought it, I plan to print business cards and leave them at nearby
vape shops.
Edit - it's so hard to put a domain in a post these days without it changing it!! I had to add in spaces.