Paint pens

[MakingforMindfulness]

Recommendations please for pens that will actually paint pebbles etc.
I've bought some from The Works which were OK but only came in a pack of 6 (red, blue, yellow, green, black and white) and I need more shades for the project I'm working on.

Posca

I'd forgotten about Posca - will add them to my shopping basket, however I am also looking for some everyday cheap ones that I can use with children so it doesn't matter if they get trashed.

Home Bargains do a big pack of 30 paint markers. Less than £10.
B&M also do double ended paint pens with brush tips. 24 colours for £4. They are pretty good.