Originally Posted by Hobie
Another option is the ABC double
with toddler seat.
That ABC stroller looks pretty neat! You see lots of people plopping toddlers on the top of the canopy/handle bar on strollers that weren't designed to do that. It usually breaks them, of course. But when it's engineered with that in mind, whoo hoo! Looks like the weight distribution would be good.
Our little guy was 22.5-month-old when our twins were born. But we didn't start riding three-up in a double stroller until he was 2yrs and 4months and the twins were almost 6 months (we didn't get our main double stroller before that). We've continued to use it that way on occasion at present (twins now 1yr and toddler almost 3), although he usually walks.
We bought a Teutonia, which is a lot like the ABC stroller. There is no toddler seat, though. We just sat him in between the two babies. We pushed their legs out to each side a bit and there was lots of room for him in the middle - sitting half on each seat. No harness, obviously but he was old enough that it didn't matter. And I do have a removable grab bar that attaches across the front for when he wanted something to hang onto, that "trapped him" in there!
When the babies were newborns, we put both of the them in the bassinet attachment for our single stroller. A few times, our tired toddler had to hitch a ride on the end of the bassinet. Good thing it's a high-quality stroller!
We also have a Maclaren twin traveller for away-from-home. Then, as others have suggested, we do one baby in arms or in carrier and one baby and the toddler in the two seats of the stroller.
Having done it, it was not different than I expected. With the kids being roughly two years apart, there was not enough overlap in stroller need that I (personally) would have spent extra money for a special attachment or three-kid stroller to accommodate the toddler.