A few months back when I started looking at blogs for activities, one thing that often came back was window markers. I had never heard of them so I looked for them one day and to my happy surprise they were available here as well. Most blogs I saw it on were US based, so that doesn’t always mean that it’s available in Canada, and often even more difficult in Quebec (different laws than the rest of Canada as to what is allowed but that’s a whole other story, lol)
I have a big patio door in the kitchen so this is perfect, just his height and big. So I got him a box and one afternoon showed them to him with the explicit direction that he was only to write with those on the patio door and nowhere else. So far so good, he stuck to it! I put them in a plastic cup for easier access. I’d let him get them on his own but they are extremely hard to open so it turned into a bit of a color practice with him asking me for colors instead.
Some of the colors almost don’t show when wet but as soon as they dry (in a few seconds), they give very nice colors. I took a pic in daylight, but it doesn’t come out to well on camera so I waited at night.
He also took some pretty cool pictures himself! He’s still working on not sticking the camera directly on the thing he wants to take a pic of, lol.
He still has his plastic cup of them accessible and uses them a few times a week so I’d say it was worth buying I guess you could also use dry erase markers but I notice the colors don’t dry and don’t look as bright.