USB Backup, FAT32

Does of anyone know of a USB stick formatted for FAT32 right out of the box? I do not want to reformat my current external hard drive and would just like to buy a new USB stick to run the Backup Utility on my PS3.

From my understanding...all thumb drives are fat32 formatted.

Thanks. I'm not the most tech savvy. How big do I need to get to run the Backup Utility? I know that depends on lots of things, but let's just assume I've taken up 40GB of my potential 80GB?

About 25-30GB

Thanks. I'm not the most tech savvy. How big do I need to get to run the Backup Utility? I know that depends on lots of things, but let's just assume I've taken up 40GB of my potential 80GB?

Artof_War