I saved a jumping spider while out shopping. I noticed her on the floor trying to avoid getting stepped on and run over by oblivious people. I offered her a small item from my cart and she jumped right onto it. She went shopping with me for half the trip, riding in the top from a box of holiday cards. I found her a nice tree outside, surrounded by grass, so hopefully she'll find a new home and be much happier.
The spider was a Gray Wall Jumper ( Menemerus bivittatus ).