It won't help the OP, but for anyone browsing and interested in interchangeable drivers for small applications like electronics, look at interchangeable blade screwdrivers.
The Wera Kraftform Compact Micro looks a quality set with lots of choice.
I also have a couple of sets of CK brand scerwdrivers - a bit bigger than jewellers - but with twin end interchangeable hex whafts. These go down to very small philips, torx and flat blades. Middling quality as the blades can slide in under strong pressure, but no slop and very good otherwise for the money.
Lastly - there are now some mini ratchet sets on the marcket that will drive stubby 1/4" hex bits and interchangeable sockets from about 5mm to 10 or maybe 13mm.
The set from Armeg is excellent quality and being compact and convenient, gets a lot of use in my workshop.