A small crevice tool for Dyson vacuums, V7 and later.

This tool is even narrower than the stock one for reaching even smaller crevices. The design has a fully functional locking mechanism like the original, using a compliant mechanism to achieve this using a single part.

Even PLA is flexible enough for the locking mechanism to work (I used PLA for this), but it might work better using PETG.

UPDATE:

I originally printed this on my Ender 3, which has a 250mm tall Z axis. For people with shorter printers I've added a shortened version that will fit on a Prusa i3

Watch a demonstration of the mechanism: