Here is some tools with adapters and drivers for 1/4″ bits, Skeletools Hammer/Jammer has 4mm, 2x 1/4″ and flatbit driver and since Skeletool allready have Flatbitdriver it has now 2 flatbit driver and 2x 1/4″ driver and it also has extender what accepts flatbits and 1/4″ bits.
SwissGrip has driver on side and it has also own removable driver (in picture its installed on Rebar)
Gerber has own adapters too on phillips and IMHO Center Drive has maybe one of the best drivers ever made for multitools, Wave has selfmade extender on flatbit drivers.
Rebar has LM Removable Bitdriver, LM Tool Adapter and earlier mentioned SwissGrip removable driver for 1/4″ bits (glatbits wont stay in place very well and drops really easily)
by Shadowz_Zero