Not the most creative design but does the job perfectly.
1/4'' bit driver, with a bearing to make it easier to twist those stubborn screws, such as with printed builds or my kids toys.
Bearing used is a 19x6x6 which was salvaged from an old fan.
I used this bit holder, not affiliated btw.
https://www.screwfix.com/p/erbauer-1-4-hex-magnetic-bit-holder-57mm/11144?tc=JT7&ds_rl=1241687&ds_rl=1245250&ds_rl=1248184&ds_rl=1248184&ds_rl=1245250&ds_rl=1247848&gclid=Cj0KCQjwpc-oBhCGARIsAH6ote90N-Q7APwK_my4DSSb1IuFzzqAHPdqhb-4-IHK5xlQ1BCVHKNrVGEaAu4-EALw_wcB&gclsrc=aw.ds