I ran across an interesting set of football drill videos posted by a high school coach from Michigan. The film show of various practice reps by used by the Georgia staff and, apparently, the New England Patriots. There are also some clips of the techniques being taught getting used in games.
https://twitter.com/JamesALight/status/998560902663364608
https://twitter.com/JamesALight/status/998560444703965184
https://twitter.com/JamesALight/status/998559428407373824
https://twitter.com/JamesALight/status/998657041664299008
https://twitter.com/JamesALight/status/998653758795075584
https://twitter.com/JamesALight/status/998653758795075584
https://twitter.com/JamesALight/status/998994664807157762
https://twitter.com/JamesALight/status/998994664807157762
https://twitter.com/JamesALight/status/998990903250505728