You could definitely do that. Or try the Anglican Rosary:
https://en.wikipedia.org/wiki/Anglican_prayer_beads
Or the Orthodox prayer rope:
https://en.wikipedia.org/wiki/Prayer_rope
Also, the Catholic rosary began as a way for illiterate peasants to say the equivalent of 150 psalms. So you could also recite the psalms and you wouldn’t be too far off the mark either.
Not that I’m running down the Dominican Rosary mind you—I say it fairly often—but there are a lot of variations on the theme.
Thank you. Making one would take awhile. Will give as a gift. 😊