Keeping design skills fresh

I have been doing a weekly PSDTUTS illustration which usually takes about an hour, to keep my skills up to date. But this guys 1/2 hour daily quickies make me look like a slacker. I set about to do a quick illustration each day, for only thirty minutes. I decided to record the drawings, and found that the process of illustrating was as much an object as the finished illustration itself. See his full collection