Window screen clip
myminifactory
I showed my mom how to get some window clips, so I figured out Fusion 360 on the fly and designed these clips right off, then printed them out and she's been using them just fine.
Download Model from myminifactory
With this file you will be able to print Window screen clip with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Window screen clip.