This problem goes far beyond tools - a friend makes concertinas, he also repairs and rebuilds antique ones, often sent over by players in the USA - in the past these often had ivory, and sometimes bone, buttons... Instruments sent from the USA to the UK have to be returned after repair... He is already encountering problems with this, and also with 'exotic' hardwoods such as rosewood and ebony - for new instruments he doesn't use FSC timbers as 99% of his materials are already second or third hand (he often uses old furniture or timber he has had in store for over 40 years) and the remaining 1% is UK grown hardwoods bought from a local sawmill...
Even if he uses man made 'artificial' ivory he has problems, as to an untrained eye this is indistinguishable from the real stuff (and bone is equally problematical) - self certification is not acceptable, he will have to buy in the services of an 'expert' to authenticate the type of material...
I have heard stories (probably apocryphal) of wooden planes with ivory tips having the ends cut off by over zealous customs officials.. However, I am reliably informed that in the US only a limited number of customs depots have the authority to deal with this type of import/export
The same problem will occur with antique pianos, which have ivory keys... as well as a host of other items made in the 18th to 20th centuries..
The Mangbetu trombash from the Congo frequently have carved ivory handles...