I found a used Bumbo seat on craigslist a week or so ago. Anna seems to like it, and it’s especially useful when we take Carrie to dance class – I don’t have to either carry a stroller down to the basement or juggle holding Anna while changing Carrie into her dance things. I just carry this very light seat down with us and plop Anna in it.
Somehow I can’t see it lasting for too long – she can already lean all the way over and get at stuff on the floor – but if it gets us through to when Anna can stay on her feet when put down for a bit that will be good enough.