N.S.
Try the Nordstrom kids shoe department (if you can get out of there without spending money). The fish tank is amazing, and they have balloons for the kids. The cafe's usually nearby are very kid friendly for lunch too -- South Coast's has a patio area.
Also a walk through a local Pet Smart or other pet store was always a fun trip for my daughter (until she got old enough to ask why we don't have any pets :) ). They have a lot of fish tanks at Pet Smart, plus birds, and dogs, and kitties . . .