This provides a slot suitable for items with clips, such as knives, razors, measuring tape, etc... Simple but sturdy design it should handle things sliding in and out of the channel pretty well. It is compatible with the universal clips in the set:

IKEA SKADIS Universal Hook Set by CSD_Salzburg

found here: https://www.thingiverse.com/thing:2853257

The clips might require minor sanding for an easier fit as this is designed to be pretty tight.

Designed in Tinkercad.

Lic: https://creativecommons.org/licenses/by-nc/4.0/