This is a windshield cleaner tool that can also be used to dust, depending on the rags you use. 

I needed a windshield cleaning tool, as my current one was not that great (the ones you buy). There were many options to print, but I never liked them, as many of them required a special rag or a rag to be cut. I wanted one that allows me to use any rag and didn't require me to jump through too many hoops to attach it or for parts to be lost. 

So I designed this one where you can use any rag of your choice so long as it can be pushed through the holes. The rag holds strong once all three holes are filled, and if it comes loose it's easy to reattach. I also went with a triangle design so you can get in tighter spots. I noticed while using it that it can be used as a duster for dusting the things in your home, so that is a nice bonus.  

It's multiple parts and while they're a tight fit, you should still use superglue to make them permanent. I printed it in PLA, but PETG should be fine. 

Update: I've made a PETG profile and it works well. I've also updated it to have a screw design where it pivots to make it easier to assemble and to take apart for storing. The PETG version holds up better in hot cars, but ABS or ASA would be even better. Avoid keeping the PLA version in a hot car.