Mastodon: fediscience.org , that’s for all kind of science. Sign-ups requirements are to give your ORCID (persistent identifier for scientist in case of name changes etc)

You joke, but dark “Esspapier” with “pencils” made out of some form of icing were a thing for a while. The pencils were a bit like crayons and writing sucked, but it did kinda work.

I just checked, you can get pens with food dye for decorating.

I’m not holding snow against them, but their pedestrian infrastructure.
It’s great for bikes, no doubt, but sidewalks are ridiculously narrow, are not cleared from snow, and in some areas don’t even exist, so you have to walk on the bike path.
Don’t get me wrong, it’s very possible to get around on foot, but walking longer distances does not seem to be part of the city planning.
If the bike paths would be equally terrible, I wouldn’t even complain, but streets and bike paths are both well maintained.

In general I’m surprised how pedestrian unfriendly Danish cities are given how much space bikes get.
With the snow there recently was, bike lanes where free, while sidewalks where a mess.