I started creating a BOM database for Eagle's bom.ulp program. This is new to me, but it's easy enough to figure out. The database is in Layout/BOM/bom_eagle_database.tsv. I also exported the first BOM for "Parts_Combined" to the same folder.

Is everyone ok with Digikey as the preferred supplier?

I'm wondering about all of these package sizes for the passive components. Were these all chosen intentionally? Particularly strange is the 2220 package. Is there any reason to not reduce this to a more standard 1206? The others are at least standard sizes, but we could probably reduce the number of different sizes to one or two.

For the 390uF electrolytics, we have ones rated for 2.5V on the 1.2V rail and rated for 4V on the 2.5V rail. It would make sense to make them all 4V, right? Maybe even higher...