My little one will be 5 months soon, so I was wondering what toy is worth investing in. So far his only toy is a teether - sopie giraffe. Will like to expand his "toy collection" soon. Please suggest.

I recently got this for my friend's baby. Lamaze Musical Inchworm It's colourful, has music (when you squeeze the head), different textures, sounds, and it also has measurement at the bottom to measure your baby's height. Very cute and interesting toy. My friend said that her baby loves it. http://www.toddle.sg/musical-inchworm?