I am very much a cat person, and I like to surround myself with other animal lovers. As gifts I started drawing my friends cats, using photos as a direct reference. See below for a sample I did of my brother's cat Mello.
I find these illustrations fairly fun and because there it is replicating instead of inventing an image they can be done fairly quickly. I am adding "Draw My Cat" to my commission form and will be able to do them at just 10$ per illustration.
Additional costs can be discussed after the fact if you're also interested in backgrounds, or a mug layout through Zazzle.com.
Check out the samples below, and give your animal companion a hug for me.
Select the "Draw My Cat!" Option.