I seem to be getting quite a few chuck keys and tap handles. I haven't even looked at the drill bit drawer lately.

you have made an error, this question is un-answerable  on this list.

Skip

If your like me you have a few small cases and a drawer of 1,000 drill bits but you can never find the right one when you need it.

Well your chuck keys are getting there. I have to say you are pretty covered.
But tap wrenches? You are just getting started! What about ratcheting wrenches? hmmmmm??
Plus, these are just for the little taps.
  There are solid tap wrenches up into the --big-- sizes. 
Lots of room to go on the tap wrenches
yours Scott

I will look. Will it be marked K3 ?

When is too many??

As I was thinking about this (Kind of like thinking about infinity,  by the way. ) I started thinking about sink holes. So, logically, I am assuming that too many is when the weight of one's tools causes a sinkhole in the earth.

Of course, at the point where all your tools are in a sinkhole, it would be time to start again.

Chilly

PS  on the plus side, Mrs. Chilly says our house could never be blown away in a tornado.

Wow!! and sorted by size!!  looks like some are worn down, (Don't you just hate it when your chuck slips)