There's a great deal going on now for a USB pen drive made by KingMax. It's 1GB and is running for only $22 (plus shipping) at newegg.com. The drive is tiny, about an inch long and comes with a small key chain and wrist band.
Comparable USB flash drives often cost close to $100 for this size so get it while you can! It was available on another vendor last week for only $20 but they raised the price to $30 before I had a chance to buy it.
This drive works on any computer (PC/Mac) with a USB port and is 2.0 compatible. Just plug it in and the system will detect it. Great for school, work or just about anything. Get it while you can!
KINGMAX 1GB Flash Drive (USB2.0 Portable) - Retail at Newegg.com
If you're looking for a secure USB flash drive check out StealthSurfer. It's has a built in browser and email client, along with Anonymizer and other features so you can safely surf and check your email on public computers without having to worry about wireless eavesdropping or keyloggers.