I was reading about sprouting beans. I found this company that sells a sprouting device that looked like two stackable plastic cups and a lid. So I made a couple of them. The cups were on clearance at walmart. The blue lid is from the instant coffee container. The holes are 3/32” or 1/8”.
A complete sprouter consists of 1 cup with holes, one cup without holes and a lid with holes that fits just inside the cup with holes. If you can’t find a lid that fits just inside the top of the cup then get an oversized one that fits over the top.