Still Retain Any Kindergarten Memories?

I have pre-school memories circa 1971-2

I remember having a plastic train with many cars, and another kid stealing cars. DICK.

I remember them having a 1/20 scale traffic light demonstration 4 way intersection diorama with red, blue and yellow 1964 imaplas.
The cars were heavy with steel plates that triggered the timers for the traffic lights.
That thing was huge and rarely brought out.

I remember a hippie family living next door that had kids.
The kids had a tin lithograph friction powered rolls royce that must have been almost a foot wide and close to 2 feet long.
I clearly remember hearing "Mama Told Me Not To Come" by Three Dog Night coming from that house on multiple occasions.

I also remember being served cold spaghetti frequently. Yuck.

In KG, about the only thing I clearly remember is figuring out, based on personality traits, who would be best as what Star Trek characters.
I cast myself as Spock.