Kids can build writing skills with these Osmo games:
1) Words, Words Explorers and Words Chomp (played with Words letter tiles);
2) ABCs and Lettertopia (played with Sticks and Rings).
Here are the product pages:
Handwriting skills can be improved with Osmo Masterpiece. It's a free app that doesn't require any pieces.
Find more information in our PDF guides to Osmo games.