Tool: free online calendar creator

This is a good tool to use to create personalized calendars with your photos. Upload photos from your computer or directly from Flickr or Photobucket.

BigHugeLabs.com

You can also make 3D art cubes.

BigHugeLabs.com has other online tools that you can try, or get ideas from. Consider making them yourself with Photoshop or similar.** (This way you can make high-resolution versions 300dpi or higher for optimum printing)
Like the motivational poster. (See all the online tools here)

The make-a-magazine cover tool is lots of fun too. But it is probably more suited to an unusual birthday present for family and friends than making money. You could try it as a service, but don't make it the only service you offer.

Tip: If you are going to use this service, plan all your calendars or whatever beforehand then purchase the 'three day pass' for $5USD, which means you can download hi-res versions of your creations - as many as you like.

**Have you seen this online photo editor? PICNIK.COM. We tried it out and it works a treat.

111 Free Photoshop Plugins

The Plug-in site has 111 free photoshop plugins.
At time of posting 26 of them were tools that can be used to enhance your digital photographs. For example, you can use sepia or black/white conversion and change mood with other filters.
These plug-ins will allow you to expand your range of services/offerings, as well as enhance your photos.