This is an activity that daddy thought up. Buy a packet of balloons and use of the left over helium from Charlotte and Daniel's 2nd Birthday party (3 months ago).
Charlotte and Daniel were over-the-moon delighted. They squealed, jumped, threw the balloons at us and up towards the ceiling, climbed up on our couch in the hope that they could reach for the balloons up in the ceiling, beckoned daddy excitedly & impatiently to get it down for them, etc.
The sounds of delightful children at play is the absolute best noise in the WHOLE WIDE WORLD.