Trying to keep track of the parts for 40+ Arduino projects at once has been a bit of an exercise in controlled chaos so a couple of weekends ago I went down to the Reject Shop and bought a stack more cheap kitchen containers with snap-on lids. Now things are much neater. This is one shelf:
Yellow labels for projects for Practical Arduino, white and blue labels for general supplies. I started doing blue labels using a Dymo labeler but it turned out that hand-written labels on electrical tape are easier to read from a distance so I gave up on the high-tech approach.
There are actually about twice that many containers now: that photo is a couple of weeks old and since then I’ve been back to buy even more.