Tool for Targeted Weed Treatment. I found something similar online but couldn't buy in my country so I made my own.
Good solution for tackling stubborn weeds like quackgrass, tall fescue, and more. These weeds often grow faster than your grass, making them a persistent problem in your lawn. Unlike traditional non-selective weed killers that risk damaging your grass, this tool allows you to precisely target the weeds without harming the surrounding grass. 

I personally use PETG but I guess it PLA will be fine.

Foam tips should fit fine depending on the brand you get, here is the link to the one i used:
[https://a.co/d/1zbsjDW](https://a.co/d/1zbsjDW)