Not a very low tech activity but this is what I do.
I keep an excel file of when I got it and after smoking 3-4 bowls of it, I'll write a review of it and keep a copy of it in a different tab in the same Excel spreadsheet.
Back before they had personal computers, I used to keep index cards on the tobaccos I smoked to keep notes on impression and inventory. Also had index cards for my pipes, one for each.