Pooh anytime, multiple times in a row.
POTC when DS was 1 and 2 worked, but he has boycotted it while 3.
Dumbo Dumbo and more Dumbo
Astro Orbiter, oddly enough (he just likes the up/down thing)
Astro Blasters since he went on it at 2.
Peter Pan, sometimes, but last time he had to be convinced that he liked it.
Teacups
Honestly, the rest of Fantasyland doesn't work for DS.
Toontown, he doesn't like either ride, but he LOVES running around opening "doors", pulling up on box lids, pushing down on the TNT plunger, and so on. Lots of interactive things to do.
He also likes going through Mickey and Minnie's houses, and Minnie's kitchen is a favorite.
And the little playground of Goofy's house.
Ignore the chip/dale treehouse thing, it's incredibly silly and disappointing.
At DCA bug's land is great (but you probably want to ignore the tough to be a bug show). Expect to ride Heimlich's Chew Chew Train. Assuming there's not a long line, you can ask to go around again (and again and again) without getting off, if the CM is kind (or unkind, depending on your opinion of the ride...I happen to really like it; it's like aromatherapy to me and I think it's funny and sweet and cute).
They have a teacup-type of ride there that I like more than the teacups.
The bumper car ride is very difficult with little ones, b/c of how you have to contort yourself to push the pedal down (especially if the 3 year old wants to steer). I don't think the 1 year old can go on it.
If you're going at a warmer time, and the parent is fine with the kids getting wet, check out the water areas at DCA! See my September trip report for just how wet a kid can get, and bring extra clothes down to underwear and shoes, if you think the kiddo or two might want to get wet.
Other than that, there's lots of stuff to look at, places to sit, places to look around...if you can (learn from my mistakes and) take things at their pace (using rider switch/baby swap) to get some exciting rides in if you wish to) everyone can have a really nice time!