When my son was born, friends and family got me everything under the son and as he got older he got a Jumperoo, which his Doc said he was not ready for. But, my Mom got his the Baby Einstein Exersaucer and he lived in that thing while I was doing laundry or vacuuming. It was perfect for him and he loved sitting up and playing with the toys that he could reach and as he got bigger conquering the one's he couldn't reach before. Actually, I think it helped him learn to sit up. But, there is nothing like tummy time to get your little one stimulated! I got the First Years tummy time mat and it had all kinds of gadgets and we'd hang out and play on our backs and tummies. Or there's the Baby Einstein one too, that has a kind of canopy over it with toys that squeak and move with music and lights.
However, when I was cooking dinner or doing dishes we'd rotate from sitting in the High Chair, Bouncy Chair or Carrier so, he could see what Mommy was 'doing' and be a part of the action. Now, at age 2 he is the biggest help in the kitchen and even cleans up after himself when he makes a mess!
It's great bonding time and really gets your little one involved in your day!