David Allen & Co suggested in their tips and tools page couple of tips on some lists you should keep, which can be useful or fun:
- Account and $ numbers
- Basic personal numbers (self and family members)
- Ideas I don't know what to do with, now that I've had them…
- Might wanna buy…
- Might wanna do when…
- Might wanna do with…
- Previous addresses and employers
- Style or product numbers I may need when I'm buying things
- Vacation things to do
I also keep a list of things that I want to buy with prices for comparsions. Very useful to see if the current shop has the cheapest price of the item you saw around. Do you keep any information with you?
Read the tips page for more detail explanations on each of the list.
Cool/convenient lists to have – [davidco.com – Tips & Tools]