I was searching for a sipmle gridfinity model but i couldn't find one. All the ones i found were difficult and didn't work together. So i took matter in my own hands and designed a simple one. 

It uses simple 4x4 centimeter holes wich are 3mm deep. It is easy to create models to put onto it and overall simple. The plate is 4x4 and 165mm by 165mm. There will be more models on the way for smaller plates. I also will be making additives for it. 

I tought i would also help you guys out. so there it is and bye bye.