My prize finds were some of the original TR3 string tags that were on the car when new. One tag explains how to properly set and release the emergency brake and the other concerned coolant. A fellow club member was going to reproduce them for TRF but it turned out it wasn't feasible. There was a third heavily soiled tag that was tied to the brake master that wasn't worth saving.
In my TR6, I also found a stringed item, NOS, still in the package. If Tampax ever goes belly up, it might be worth a nickle.