I happened across this forum thread about people who created docks for their Droid phones using Legos. In particular, I liked this one by HoboDroid:
So I pulled my Rubbermaid tub of Legos out of the cellar and found all the pieces to make something pretty similar:
Same basic design, but mine has a channel for the charger cord to run to the back, plus I discovered I had actual Lego magnets, so I used one of those.
Now I just need to find the pieces to make a second one for at work...