I am always looking for things to keep my daughter entertained at church that aren't super noisy. We made this together and brought it with us to church and it worked for a little while. I've also heard of people making quiet bottles for when they send their child to time-out. The good news is that they are really easy and cheap to make so if they don't work as well as you'd hoped, you aren't out a ton of money.
To make the quiet time bottle, use an empty water bottle and fill it with things like buttons, pom poms, beads, cheap ribbon, etc. The buttons will fall while the pom poms float so it makes it more entertaining for kids to watch as they tip it back and forth.