Free: Contests & Raffles.
Just get another SD card, they are cheap, And swap them out.
I like the old phone idea. I do have an old Droid with an SD slot. However, I wouldn't be able to save the pics and email them to myself. As far as SD card size goes, 32 is way more than I need? Should I just get another one that's 16GB or even smaller? I plan on doing one week soaks and I'm setting the camera to 4 megapixel instead of 8 to keep file sizes down.