for that short of a ride, why not a closeout walmart special? Or anything you could find on craigslist?
It took a good 3 days for someone to finally take an unlocked, bright pink (I think it had ponies on it too, and definitely sparking rainbows) 24in-tire bike that I used during college when I was moving out.
Mainly because I have several famesets and plenty of parts to work with. I think I can toss a beater together for under ten bucks.
I have decided my answer to rust will be to just let it. This let if rot disposabike approach is a 180 degree shift in thinking for me.