We have counters....and lots of them. Mixing up what we use to count with gives more interest to counting and can assist with a theme that O is interested in.
Sometimes we use just one color, and other times we use all the colors. Sometimes we use the light table, and other times we just use the counter.
Here are some other things we have used as counters:
Stones usually used for decor
Stones found on a walk to the park