Receiver Get Loose Drill
A quick warm-up for your QB and receiver is the Receiver Get Loose Drill.
Have quarterbacks and receivers jog around the field tossing the football back and forth. Be relaxed and loose. Get fancy with the ball, tossing it behind the back, underhand, overhand, etc.
In addition to the free resources you've found here, Glazier provides online football coach education through Glazier Drive and live instruction at our in-person clinics across the nation.