How I Use The Tickler File
I would suggest putting it on your calendar. I do the following:
1. I use Yahoo calendar.
2. I put the item I need to be reminded of on the specific date.
3. I set up an email reminder in the event.
4. I set up a filter in my email to handle these reminders and it sticks them in a Reminder folder.
5. If there's a piece of paper associated with it, I stick it in Waiting For.
Here's an example, I do not escrow my property taxes so I get a bill each year. It used to be that property taxes were due on May 10 and November 10. However, depending on how 'on schedule' they are, the first installment has been due later than May 10. They only send a bill when the first one is due so I have to remember the second one.
On my calendar, I put "Property Taxes Due" on May 10 and set up a recurring event for it to repeat each year. I put two email reminders in out for one week and a second for one day. I do the same for the for November 10.
When the first installment is due, I get a reminder. If I haven't got a bill yet, I stick the reminder in my email Waiting For so I can remember it's out there.
Once I get the bill I put it on my calendar with the amount on the new date and the revise the calendar entry in November and put the amount on it with a reminder for me to pay it and put the bill in my plastic Waiting For folder.
When the bills come due I pay them and am reminded by my calendar, by email reminder and when I review my Waiting For folders.
While I could use a tickler, I choose not to because it takes up so much space and I forget to check it. I do check my email everyday and this system helps me remember so many things, I can't believe I ever lived without it.
If you have a large number of physical items to go with a future event, then I think it makes more sense to use a tickler with the 43 folders, but I would suggest if you only have a handful of physical items using an "action folder" or "tickler folder" if you want to keep it separate from your normal waiting fors.
This is what works for me.