Who has a detailed file on their projects?

I have notes in a couple notebooks. Mostly random. Some stuff I did. Some plans, parts used, price comparison shopping around. Also have a box full of papers. Receipts, pieces of parts boxes with numbers etc. I figure when the car is done I might organize the whole mess and estimate what it cost.
Also took a lot of photos and did my build thread as a log of work done. I did lose a bunch of pics early on that were on a phone that died.:BangHead: