Using a paint brush with Niboium -

I did a quick fix last night just to try  using a paint brush with the niobium -  I didnt have an extra  black anode  and putting it on a round feral on the brush  it popped off frequently so I grabbed a hammer and flattened  the feral  and the clip easily went onto the flat piece and did not pop off - was not an expensive brush  - but it was a quick fix to play - but I do want to make brushes with the  anode fixed to it as I think its safer  that way it has a rubber out side holding it place and you wont shock yourself

and painted on some niobium 

reactive metals has a cool pdf outlining how to create them along with instructions on page 5

Reactive Metals Studio - downloads