Not keeping this updated. Leaving this here for people who might be interested.

Some League of Legends things:

Item Customizer
By ApocalypseShard. With this, you can change the Recomended Items for your champions.

Quickbuild template (PDF)
For quickly building a champion. Good for beginners.
LoL Skin Previewer
I didn't develop this but it's still good if you want to see what a skin looks like before you buy it.

A developing site for all things Dominion.

Not keeping this updated anymore.
LoL Champions by Category