As a Boomer growing up in suburban Chicago, I fondly remember Ray Rayner and Friends (and Bozo, Cookie, Romper Room, etc. ). Sure, he was goofy but I ate it up as a kid. Cartoons, "terrible" arts and crafts, reading letters from viewers, the Zoo segment (the Unicorn song!), the duck and more all kept me entertained. The show was certainly low on "polish" but I enjoyed it's DIY look.
As another reviewer stated, hearing your school's name called on a snow day was the ultimate day off!
I'm sure people watching videos of it today don't get it/like it. For me, it will always be a great memory growing up in Chicagoland.