I have developed a scuba checklist with Items I find useful so I don't forget something. If able will attach as a MS word file that can be downloaded and used/ modified by others. items are below. Question marks seen below in MS Office show as bullets. Looks a lot better in office format. fits on one page.
SCUBA list
Clothes to wear or take
 Swim suit
 Outer clothes weather dependent
 Hat
 Sunglasses
 Cash ,I.D., fish license
 Towel
 Dry bag
 Afrin, scop. Patches
 Dry box, if needed
 Cell phone, beeper
Dive Gear
 Gear bag
 Mask, snorkel, no fog.
 Fins
 BCD
 Tank filled
 Tank tamer
 Regulator with console
 Flashlight(s)
 Knife
 Collection bag/ lift bag
 Save-a-dive kit
 Reel
 Slate
Exposure protection
 Boots, gloves, beanie
 Wet suit , or parts thereof
 Dive skin
Hobby accessories
 U/W camera/ housing/shield
 Video cam/ housing
 Speargun, cooler, stringer
 Scooter/ battery(charged)
Emergency
 Surgical kit
 Charts, map,
 Sunscreen
 Spare air/SMB
Boat accessories
 Dive Flag(s)
Night before
 Batteries charged
 Dry bag with items
 Scop patch if indicated
 Dummy cord-glasses
Inner to Outer packing.
 Fins
 Boots
 Dive skin
 Knife
 gloves
 Beanie
 Wet suit
 Mask/snorkel
 Weightbelt
 BCD
 Tank
 Regulator set
 Collection bag/lift bag
 Flashlight
 Reel
Accessories
 See hobbies at left
Other to dos
 Gas up car
 Ice for cooler
 New batteries for lights
Before leave house
 HOT WATER for suit
 Snacks, sandwiches, drinks
 WEIGHT BELT TO CAR
 Tell location, ETA and ETR
SCUBA list
Clothes to wear or take
 Swim suit
 Outer clothes weather dependent
 Hat
 Sunglasses
 Cash ,I.D., fish license
 Towel
 Dry bag
 Afrin, scop. Patches
 Dry box, if needed
 Cell phone, beeper
Dive Gear
 Gear bag
 Mask, snorkel, no fog.
 Fins
 BCD
 Tank filled
 Tank tamer
 Regulator with console
 Flashlight(s)
 Knife
 Collection bag/ lift bag
 Save-a-dive kit
 Reel
 Slate
Exposure protection
 Boots, gloves, beanie
 Wet suit , or parts thereof
 Dive skin
Hobby accessories
 U/W camera/ housing/shield
 Video cam/ housing
 Speargun, cooler, stringer
 Scooter/ battery(charged)
Emergency
 Surgical kit
 Charts, map,
 Sunscreen
 Spare air/SMB
Boat accessories
 Dive Flag(s)
Night before
 Batteries charged
 Dry bag with items
 Scop patch if indicated
 Dummy cord-glasses
Inner to Outer packing.
 Fins
 Boots
 Dive skin
 Knife
 gloves
 Beanie
 Wet suit
 Mask/snorkel
 Weightbelt
 BCD
 Tank
 Regulator set
 Collection bag/lift bag
 Flashlight
 Reel
Accessories
 See hobbies at left
Other to dos
 Gas up car
 Ice for cooler
 New batteries for lights
Before leave house
 HOT WATER for suit
 Snacks, sandwiches, drinks
 WEIGHT BELT TO CAR
 Tell location, ETA and ETR