Boo Boos were made by Hornby in 1986. They were little chubby pixies based on the Mabel Lucie Attwell drawings. These little guys (and later gals!) looked after Baby Twinkle (a doll in a treestump crib 'abondoned' in the forest) and her puppy.
Boo Boos had glow in the dark antennae, shoes and came with appropriate accessories to match their names ('Tidy' had a broom, 'Playful' had a rattle and 'Tuneful' had a record)!