For me, loads of sculpting tutorial demonstration channels. Clay and/or kitbashing.
North of the Border
Ace of Clay
Crafty Art
Steven Richter
Dr. Garuda
Just Crab
JackJackCreator
Art Chong Art
Zan Von Zed
Bill Making Stuff
Blinded by Daylight
Studson Studio
wAw Creator
B Crafts...