I lost my old bamboo mahl stick, so I made a new bamboo mahl stick. This one is nicer.
A mahl stick is used as a hand rest for painting. The end is covered in a soft material that won't (hopefully) damage the surface; in this case it's some of that sticky silicone shelf liner.
The shaft is a bit of bamboo from our garden, the knob on the end is turned from a bit of an old broom handle.
When you're finished painting, you can flourish it at people and cry out "Expelliarmus!" It won't do anything, but there you go.