If you're waiting in line at the post office, for example, give him a book to page through or make funny faces at him instead of handing him his pacifier. (babycenter.com)
Keep her favorite toys above her to encourage her to look up by pulling funny faces and making sounds. (toptenstrollers.com)
The canopy is a good size for proper sun - protection and has a window so your twins can make funny faces at you. (twinloveconcierge.com)