I made mine in simple PLA+ 15-20% infill seems plenty if you take care of them and leave it in a garage or shop. Change accordingly to fit your environment. All parts should be able to print with no supports. Mounting should be able to utilize standard metric size hardware or inserts to join parts together.
1 holder and two extensions is ~100g using 20% infill for reference.
Check back for various updates as I use them and tweak them.
The author remixed this model.
Made some modifications to allow for printing the the vertical orientation without the need for any supports. Added a small cutout for the round battery stops to hopefully add a click however this works with very limited success at the moment. Added separate features to quickly extend the base off a surface, ie tools with a belt clip, taller tools like the jigsaw etc.