Here is a photo of one that counts in to double digits. You use the colored beads to signify 1-9 and then the clear beads are for the tens. In this photo the counter is reflecting 26. So here's my tutorial on how to make these. First get a stitch marker and a long piece of thin ribbon. You fold the ribbon in half and loop the two ends through it and pull it tight. Next you take a bead and you thread the ribbon on the right through the bead from right to left and the ribbon on the left through from left to right. Then you add the next bead and repeat. So the ribbons thread back and forth from side to side through the beads. Both ribbons pass through each bead. You add as many beads as you want to make a counter that counts as high as you want. When you're done you leave a bit of space on the bottom and tie the two ribbons together. To count you just slide down the beads one at a time. I even made one on a very tiny stitch marker with very tiny beads to use as a row counter for my Monkey Socks. I used embroidery thread and had to use needles to get it through the bead holes. I love how light it is - it doesn't get in the way at all but I must admit the beads don't slide as well as they do on ribbon.
As you can see I got a bit carried away. Once you start you cant' stop. I kept thinking of projects I could use these for! Another suggestion is to make these as gifts even for non-knitters. In that case I would use the jump ring and instead of counting rows they can be used to count your blessings when you get up in the morning or before bed. It's a really fun way to get to use some beautiful beads as well.