My mum wants to know what I want for Christmas and am considering a 3D pen, I have a 3D printer, Ender 3 v2 which is quite old but works well enough for me, I print tools and odd bits and bobs and quite enjoy it, was thinking a pen would be good for doing little repairs and filling in missing bits of the things I print myself. Just wondered if anyone has any experience of which would be a good one to buy in the £40 is range or are they all much the same at this price point.