I used one of these with my son and daughter and found it great!
Playnest is a fabric covered inflatable ring that provides vital support for baby during both rest and play
A self-contained play environment for babies and toddlers with textures, patterns and sounds to explore
Multi-sensory features are incorporated in the activities, the nest helps simulate touch, vision and hearing
The fabric cover has a quilted centre for baby's comfort and is machine washable.
Outside diameter is 100 cm (39 inches), manufacturer's recommended age is 6 months upwards