These items are really cheap to buy, if you live close to a store that sell it. I like to DIY, so I modeled one myself.
My initial test part is printed in PLA and works just fine, it uses 4x round rubber pads, 10 mm in diameter to keep it from moving on the flor.
I have added 3 different heights, 25mm, 30mm and 35mm. These are the measurements from the floor to your door. You do want some tention on the stopper so go for a higher number. If your door is 24-25 mm from the floor, go for 30mm etc. Door blade can be maximum 49 mm wide on this part.
I'm happy to help you with other dimensions. Just let me know!
The author marked this model as their own original creation.