I know, it seems weird to do an audio workshop for something as visual as a camera. But we're not teaching focus or composition here. Instead, we're taking you inside each subsystem of the camera and you'll learn a lot, even as you drive to work. Before I move onto the next product, I'll give you two great tips for this product. First, to celebrate the launch of Connected Photographer, we've got a special savings coupon code for everyone who buys this month. It's in the Product Availability and Resources section at the end of this article. Second, at under $30 with the discount code, it makes a great gift if you don't know what camera to buy (or if you want to save some money).

4. Memory cards
Again, using PriceWatch, we've actually found flash memory cards with 512MB for under $100. This is an amazing price, and with a 512MB card, you can save a whole lot of pictures. These cards are extremely useful (make sure you get the right card for the camera owned by the person you're buying for), and current prices are exceptional.

5. A tripod
A tripod is an excellent tool for taking pictures. It holds the camera steady and lets you compose your images. A full size tripod can be found for well under a hundred dollars. We even found a mini tripod, the TR-036CL, for under $5 at Wal-Mart.

6. A camera bag
Yes, you can spend well over a hundred dollars for a camera bag, but you can also get quite an assortment for under $100 as well. There are as many camera bags as there are camera choices, so you should choose based on what you think will support the camera. We've recently started seeing backpack-style camera cases, like the Targus DPMV02. For under $40, you can give a case that's rugged, holds quite a bit, and will keep your favorite photographer's hands free to hold onto handlebars, burgers, or the side of a mountain.

7. Buy a book
Like camera bags, there are a whole lot of books out there. One of our favorites is the "Down & Dirty Tricks" series by Photoshop guru Scott Kelby. This series has been around for a while, but one of the things we like best about it is that it showcases a given effect and then gives step-by-step instructions for accomplishing the effect.

8. A good scanner
Everyone should have a scanner. Even if you take digital pictures, you're bound to want to scan in an old photo, touch up an image, or just scan in a body part. Scanners are shockingly inexpensive. The Canon CanoScan LiDE 30 Scanner is under $70 at Amazon and there's an even less expensive unit for under $50!

9. An inexpensive photo printer
We actually found a photo printer on Amazon for under $10. We're not going to recommend it. But you can find very inexpensive printers that print surprisingly nice photos. You will absorb some additional cost due to the paper and ink, and some printers will be slow, but printers like the HP PhotoSmart 7260 Inkjet Printer are available for under $60.

10. Batteries
Every digital photographer knows that batteries are essential. We were rather amused by the battery belt packs we found when researching this item. While you can buy batteries at your local Radio Shack, battery belts are worn around the waist and either recharge your camera's batteries or provide a backup service. The Bescor PRB-15 12V 14.4amp Two Pouch Battery Belt Pack is one such pack, and it's available for just about $99.

There you go. Ten useful products for under $100 each.

David Gewirtz is the author of How To Save Jobs and Where Have All The Emails Gone? For more than 20 years, he has analyzed current, historical, and emerging issues relating to technology, competitiveness, and policy. David is the Editor-in-Chief of the ZATZ magazines, is the Cyberterrorism Advisor for the International Association for Counterterrorism and Security Professionals, and is a member of the instructional faculty at the University of California, Berkeley extension. He can be reached at david@zatz.com and you can follow him at http://www.twitter.com/DavidGewirtz.