There are a number of companies that are known to manufacture custom fire place screens. Woodland Direct, Hayneedle, and Frontgate, for example, each offer this service.
eBay, and overstock.com
If a custom van is what you are looking to buy, the best place in the San Diego, CA area would be, California Conversions. They have a wide variety of custom vans to choose from.
There is a place where you can purchase custom CD cases. You buy the package and you can get it in a matter of days. You can decorate your custom CD case by hand or computer. The link is http://www.jewelboxing.com/index.php
You can buy online from Addprint Rubber Stamps
Amazon.com is the best place to find a Kindle Fire. The Kindle Fire can also be found at Best Buy.
http://www.customdentures.org/ hopefully this helps!
You can buy custom running shorts in many different places. Ebay is a great place because it is very cheap and you get many different choices to choose from.
walmart
Wristbands online would be the place for you to start your search for custom printed wristbands. They are located in the US, but will ship internationally.
Try www.reasonablyclever.com. it has a place where you can make your own person and then buy them
The best place to buy cheap and custom made laminate countertops would be from ikea. They are very affordable, good value for money and you also order your laminate countertops to be custom made.
There are several places online where you can buy custom running shirts at a low price. CustomInk.com is a great place to start, they have low prices and you can make any design you can think of.