screwdriver is 100% not genuine! they should have a grey handle and the shaft pulls out and is a cross head one end, flat the other.
the plastic thing is some magic wind up tool which in no use at all on the e30. people just like spending silly money on them to fill the empty hole in the tool holder which spends 99.99% of it's time in a closed position on the underside of a closed bootlid for some absurd reason.
I'd sell all the bits separetely as it's not a totally complete kit, and the corroded peg and non oe screwdriver are worth sod all. the spanners, pliars and is specific plug tool should fetch a few quid each as should the plastic thingy which is probably worth as much on it's own as the rest put together.