I haven't gotten around to making the second project just yet, but here's the first...hope it inspires better bathing.
Step 1: Joint an Edge
My jointer is a little under-powered, so we had to make sure to advance slowly and remove only small amounts of material with each pass.
Step 2: Trim on Table Saw
Step 3: Plane Two Faces
Step 4: Trim to Length
The length of the tub caddy depends on your bathtub and should be sized to fit it precisely. Measure the tub and add a few extra inches if you want it to overhang the outer lip.