I’ve started to track my I-Bonds, Treasury Bills, etc in my own spreadsheet. I’d like to include them here not as lump sums for general projection, but actually reality. While I know this goes against some of the philosophy of projecting in a lightweight manner, I’d like to add more ‘certainty’ for the things that are certain.

Additionally, doing this in a historical manner – e.g. you capture prior Actual performance over time would really help you understand trajectories