Funny, that's a timely thread.
I just took my recently-acquired 958 into my local Indy shop for a brake job. They called me saying they couldn't find the lug nut key anywhere. I told them I thought it was in the glove box but wasn't sure, they assured me they had checked everywhere and couldn't find it.
They ended up driving it across town to the Porsche dealer to get the nuts removed. Rather than order a new key, I asked them to just replace the locks with proper nuts.
Go to pick it up and they toss me the locks in a plastic bag with the corresponding "key" number "just in case you want to order a new key".
When I get home, I toss them in the glovebox...and what do I see but my missing "key".