Series for pre-school children. Roly, Little Bo, Yugo and Migo all have their own best things but there are some things that they can share too. Little Bo visits her uncle, Roly Mo, in Fimble Valley every day and there's always something exciting to do during a visit. Little Bo's leaf collection and Yugo's rock collection are looking good, but Migo's sandwich collection doesn't seem to be very big. Plus, Roly gives Little Bo a diary of her very own, but what can she put in it?