Off the top of my head here are some guys that played and then coached their alma mater at big schools. There are quite a few more examples at lesser schools and lower division programs.
Phog Allen at Kansas
Branch McCracken at Indiana
Joe B Hall at Kentucky
Guy Lewis at Houston
Frank McGuire at St. Johns
Fred Taylor at Ohio State
Gary Williams at Maryland
Eddie Sutton at OKSt
Jim Boeheim at Syracuse
Norm Stewart at Missouri
Lon Kruger at Kansas State
Bob Huggins at West Virginia
Great job off the top of your head.
+Matt Painter @ Purdue