Because it is so cold and rainy and gray around here, I find it difficult to go out for walks at lunch time, which I like to do to break up the work day. So to entertain myself at lunch, I've been doing practice art -- basically, copying stuff out of books. It makes for a nice break and it's good for refreshing my freehand drawing skills.
Dover clip art collections are great for this. These first two are taken from "Medieval Alphabets and Decorative Devices":
And this one is from "Medieval Herb, Plant & Flower Illustrations":
I drew them freehand in pencil first, then inked them in. The alphabet ones are challenging!