Family trip in Anaheim

Hi there, sorry if this isn’t the place for this kind of question but my kids (10 and under) are going to be in Anaheim for a couple days and was wondering what spots you think are the best to hang out and find something to do. Beaches, parks, hikes, that kind of thing is what we’re mostly interested in. Was also vaguely considering Disney or Universal but they seem awfully expensive so I’m curious as to a local perspective. We’re driving in from Vegas.

Thanks for any help you can offer!