Oh your soil sifter is good and practical. Good to segregate materials that remained in the soil. This gave me an idea on how I could trap the white bugs that has been in the soil during winter...

I found a soil sifter in our garage in Spain that was used by our mason while they were building our house. They used it when they needed fine sand to finish a wall with cement/sand combination. I do not have a photo since I am here in Vienna, but its a round one that has a wire mesh attached to a plastic frame ... I haven´t used it though since I have a cactus and succulent garden there. The sifter is similar to this one (Amazon, costs 10Euros) but a bit bigger in diameter.