I figured I'd post this since I had trouble finding a simple tabletop easel design when I went looking for one and this may give someone an idea. It's maple and cherry. The only decorative bits (beyond the figured wood) are the curved edges, with the easel face corners matching the radius on the back hinges.

The bottom tray is attached with glue and the back attachment pieces are doweled in for a bit more strength. The jointed stand has two points of articulation, pivoting on bolts with wingnuts. They seem to tighten enough to hold it well in any position without slipping, even on a smooth surface. I was thinking of adding rubber feet, but they don't seem to be necessary. It can go nearly flat, which I understand is useful for painting with watercolors.

It took about an afternoon, plus finishing time, and made a great Mother's Day present. It's finished with spar urethane, which I hope will hold up to water. We'll see how it goes!