The Phillips/hex/etc. sockets for ratchets that Sears used to sell retained the bit with a spring; you could remove the bit from one, and use regular 1/4" hex insert bits, something I did for years with the one I had.  Alas, the one I had has run away and joined the circus, and, so far, I haven't located a direct replacement.  GearWrench sells a set that includes a socket, with a bunch of other bits (see link below).  It'd be nice to find just the socket.  Anyone know of a source?

http://www.gearwrench.com/catalog/bit_sockets/insert_bits_and_bit_holders/setdetails.jsp?part=80724

Bill, I probably have a few of those suckers laying around, if you're not picky about brand or shiney chrome. Give me a day or so and I'll dig thru my coffee cans.
Oh, do you want 1/4" drive or 3/8" drive? I think I have both.

Function is the key.  Shiny not relevant.

I'd prefer 1/4" drive, thanks; when I need to use an insert, it's invariably in some awkward/tight spot.  I'll send you a private message to discuss it further.