I always paint the glas (pretty thin) along with the windowframe, to prevent condensation to damage the frame. Scraping it clean afterwards is a lot, I say a lot better than using masking tape. What's on the market always had a loose blade, so I made one with a clamp, which is also a grip for your indexfinger.

Because standard pillboxes make such a noise while walking! This one doesn't.

The standard bambu scraper is a bit simple. This one too, but you can attach it to your doorknob. Slide it over and to the left and it hangs. And you'll never search for it again. In the proces it became a tiny bit stronger to.