I created myself a printable tool insertion tube to use the EDC Lite Multitool in my second Mountainbike.
Printed it in my CR10 out of PETG Material and scaled the Part to 100,6% to compensate shrinkage.
It seems to be solid enough, though i would not recommend tightening the center screw too much.

update 12.01.22: moved latching holes slightly downwards to achieve a tighter fit of the topcap