7P's:
Prior Proper Planning Prevents P*ss Poor Performance.
I work it from hands to power outlet/strip-
Player: Spare picks, wrist sweatband, ear plugs...in cargo shorts of course.
Gig bag: Bass, strap, cable/lead, multi-tool, battery, strings, micro-fiber rag.
Pedal board (if required): Double check all patch connections and power supply prior to packing, cable/lead from board to amp.
Amp and case: Speaker leads/cables pre-connected, double check amp power cable in conditioner.
Cab and cover: Extra speaker cable/lead.
Backpack/ruck: Drum key, instrument stand, power strip (25' cord), hand sanitizer, baby wipes, extra ear plugs, clean t-shirt, small stick of deodorant, bottle of water, hand towel, 50' XLR just in case, small bottle of acetaminophen and pseudoephedrine, small pack of tissues, gum, and meal replacement bar.
Set-up:
Starts with amp/cab, then power.
From amp:
Cable to pedalboard or instrument, pedalboard power, instrument cable/lead to instrument, instrument stand, bass, strap...
All/any other gear/bags/case doors are placed in the cab cover turned upside down and placed behind the cab (space depending) or next to the stage/riser/staging area.
Either eyes-on (friends/spouse) and or positive control (hands).
Teardown goes in reverse.
No extra bass, no extra amp. All tested prior to departure, and regularly maintained/serviced.
If I had a different gig/schedule/itinerary other adjustments could/would be made to packout list.