Lukas is about 41" tall, so there are only a few rides that he CAN'T ride... (Indiana Jones, Maliboomer...).
The great thing about
Disneyland is that there are soooo many rides that are height appropriate for little ones (not so with DCA, unfortunately)...
As a matter of fact, Lukas loved ToT, but kevin2 won't go near it!
Before Lukas was tall enough for Splash Mtn (for example) He and Kim would stand in line to see Pooh, go to the Pooh shop or ride the Pooh ride (all very close to Splash Mt.... while K2 and I got wet! Be sure to get FastPasses for this ride first ting in the morning, as they do run out usually by 1 or 2PM. With a FP, you're on and off in 20 mins or less...w/o it's 120 minutes sometimes!
There are lots of options like this one for the whole park...
Also...not sure if everyone here knows this, but the Fastpass machines at DL are NOT all linked together...so it is possible to hold FPs for several rides at once. One time, when we were there with a large group of people, I was in charge of running around collecting the FPs, and I had a stack 3" thick in my pocket! No kidding. It never hurts to try the FP machine. You'll be surprised! I can go further into detail later if you like, but I'm at work and supposed to be ummmmmmm..... working.
See ya,
Kevin