1. How do you keep track of them?
Acess Database
2. How up-to-date is your list (Assuming you have a list)
Very ... I even know what I have ordered, but has not arrived
3. What kind of information do you keep track of? (Assuming you keep track)
HL#, name, state, category (Glow, LL, LE etc), plate No., if I have papers and box

Bonus Question:
4. How do you decide which HL items to purchase now?
I ask myself if I like it and if the answer is YES, then I ask myself if I can afford it.