my notebooks get the most minute-to-minute use when i'm modeling. they're one of my primary tools during the process - to sketch ideas, add up figures, note relationships, etc.
the Public Radio is coming along. the pot is a little tricky to fit in the enclosure, but i think we can make it work, and the speaker and battery will be fine regardless. i have half a mind to switch over to a Weck jar, as the lid is slightly larger, but it lacks the brand name recognition that Ball jars are so good for.