Sesame Street - While he also gifted us with all of the Muppets (among other things) which are not intertwined with Disney, I'm thinking of the early days when my world revolved around Ernie and C is for Cookie were words to live by. Even the little cartoon sketches like the Ladybug Picnic, Capital I, and The Alligator King left a lifetime of impressions.
The Magic Garden - I don't know if this aired beyond the NY Metro area but it was my lunchtime show during kindergarten. Carol and Paula would sing in their brightly colored garden, Sherlock would get into trouble and learn valuable life lessons, and we all laughed along with the Chuckle Patch. Add in the easy to make Mug-O-Lunch that was usually on the menu and my afternoon was set.
The Uncle Al Show - I don't know if this aired outside of the Cincy area (lived there for a year) but this was one of my local faves. I was lucky enough to see it in person a couple of times too, which was fun because kids would sometimes get pulled out of the audience to be in skits and we all got on stage at the end for pictures with Uncle Al and the rest of the cast.