Hey there Hi there Ho there, Heather!
You're as welcome as can be here at the Disney Parks Moms Panel, so thanks for bringing your fantastic question. Watching my toddler experience the joy and magic of a Disneyland Resort vacation was one of the most amazing feelings. From attractions to Characters to entertainment, there is so much for little ones to enjoy at both Disneyland Park and Disney California Adventure Park.
Most attractions, including classic and timeless attractions, actually do not have any height requirement meaning they are safe for even the littlest infant and toddler Guests. Some examples of these are Dumbo the Flying Elephant, Haunted Mansion, Peter Pan's Flight, Pirates of the Caribbean, "it's a small world," The Little Mermaid ~ Ariel's Undersea Adventure, and the Disneyland Railroad to name just a few. You can
view all attractions with their height requirements online or on the official
Disneyland app. If your child is at least 32" tall, they can actually ride even more attractions like Autopia, Mater's Junkyard Jamboree, and Luigi's Rollickin' Roadsters.
Apart from attractions, little ones this age love meeting and seeing their favorite Disney Characters. I recommend keeping an eye on the Disneyland app for which Characters are appearing each day. You can also view entertainment schedules so you don't miss out on fun experiences like the Disney Junior Dance Party!
I hope this helps, and please return if you have any other questions. See ya real soon!
-Jennifer