As they get older, consider seats like the Contours Twist Grow - With - Me, or even excersaucers or high chairs if your bathroom is large enough. (twiniversity.com)
It is cute and so much better than our old, bulky excersaucer. (albeebaby.com)
The other bonus is that my baby's feet are directly on the ground and the activity center doesn't collect dust below like other excersaucers. (pregnancymagazine.com)