Hi Ray.
There used to be (when I was flying the MavPro Plat and the Mav Zoom )- a few people that got excited about a Quick release device - that could be attached to the drone and activated by the ON/Off of the Lights - This needed to be attached to the lights by opening up the drone -
It worked - ... but was used for Dropping Fishing Lines at a Distance and sometimes inflateble lightweight life vests.
But nothing ever over about 500g which was already a weight straining the Battery to Lift of the drone.
I remember over COVID - that we were in LOCKDOWN - and I would Send my Drone from my home on the Mountaintop to the Gas-Station Store in the Valey to buy Chocolates and stuff...
I Hung a String and a Pouch canvas Bag with a stone in (to keep the Bag Below) Plus would send Money and a NOTE for my chocolate Order - Then Phone ahead -.
Sure enough the Chocolates and Change would come back.
It was fun and I did this a few times-... but with never more than 400g Payload.
Just to put this in a Nutshell - the consumer drones by DJI that we know are not designed to lift anything really. They can - but will Really push the design amperage of the Batteries (killing them faster)
If your intention is to make your drone into a Workhorse to carry a PayLoad - then Maybe the DJI enterprise drones may be for you... that can carry a Lot more.
The ones that come to mind ... are the Matrice 300-350 series - but these are super costly - (used to carry Fertilizer or pesticides for farms etc )
Some delivery services being offerred use custom designed drones - and opt to use the Airplane design - for more weight and distance efficiency over the Quad Copter design.
IM SURE there WILL come a time in future where Batteries are super Lightweight - and Super Efficient where a Machine will lift Many times its own weight....
DJI is getting better - but not there yet.
SO Unless your dog doesnt mind Only a Snack being dropped, then the Quick Release may not be worth the trouble. (for the
M3P)
Even dropping a Bag of water on someones head may be too heavy (Haha)
Hope this Helps