In Keeping with popular demand (i,e. most views and downloads on my Thingiverse accounts are for "Dummy" parts of no practical printing value!).
I have uploaded a model of a Crayola Felt Tip Pen my daughters have used to colour in their bed.
I mean honestly! what where they thinking? These are fortunately washable so I think the sheets will come out clean, but maybe I should print out a non-working Crayola Pen and replace all their actual pens with pens they can't draw on bed sheets with.
NOW WITH TOP
AKA Eur Ing Andy Southern.