Because this can be hard for mamas to sort out, I thought I'd put together a list of some toys that have been very popular with mine and my friends' babies. This is really about 0-8 month toys.
Sassy Ring O' Links (I've also seen it called Lively Links) is a definite keeper. This is one toy that has been replaced twice as she has dropped it while strolling and it is too much fun to not replace. I recommend getting 2 straight off the bat, as you can use 1 as the toy, and the other set's links to attach other toys to strollers, etc.
Learning Curve Stacking Cups. I like these because they have numbers on the bottom, and holes so they can be used in the bathtub and not hold water. They stack upside-down and right-side up.
Haba Kringelring. This has been a consistently favorite toy for my daughter, since she was 3 months old and could grab it. She manipulates it, rattles it, bangs it, shakes it, and pokes at the rings trying to figure them out. This is always with me in the diaper bag!
Skwish. This seems to be one of the favorites among all the babies. Comes in 2 different color palettes, and a natural version for those that don't want color. Babies can shake it, skwish it, and just enjoy watching the bobbles slide back and forth. My daughter has loved this from about 4 months old until about 8 months old, and during that time it was a favorite.
Winkel. I hate the name of this toy, but this was the first toy our daughter took to. It was picked up almost accidentally as she would just weave her hand in it and it would sort of get stuck, and then she'd have no choice but to shake it. The tubing is also the perfect size for wee hands, and my favorite part about it is how easily it cleans up. It's the perfect toy to have on hand when the baby is spitting up the most.
Finally, the O-Ball. It rattles, it rolls, it is light as air. It is another one that baby loves putting up to the mouth, shaking, and getting their hands stuck in. Another favorite! We even have the Mini O-Ball for the stroller, which is just as popular. This toy is still as popular with our daughter as it was when she first discovered it when she was about 3 months old.

