In article , Robert M.
Gary wrote:

Especially for guys like me that are more than 8 flights behind in
their log books. Luckily I write receipts for my students so I can
remember those flights. I'm sure there are flights I take by myself
that I never remember when it comes time to sit in front of the T.V
and update the log book.

That's why I use my flight logging cards. They are always attached to
my kneeboard or checklists.
Even when I get behind in my logbook entries, I just pull out the cards
and copy the information in the appropriate columns.