leaves and bin bags

How do you fill bin bags with leaves easily when there is no one to hold the bag open?

Here’s how....

find a cardboard box that fits inside the bag whilst in the shape of a box

pop out the bottom of the box, flatten and fold the box to get it inside the bag, then reform the box
fold the top of the bag over to keep the box open and in shape

fill the bag with the help of 'big hands' pieces of scrap wood that are used as large tongs to lift
large quantities of leaves at a time.
Fill the bag, allowing enough spare to tie off, remove cardboard box and start
all over again

one tidy village.  Thanks for the leafmould Vieuzos