Unjumbl
The hard decision is already made. What's left is an errand, and errands without a date tend to wait. Here is how to get the pile out of the house and out of the car.
Sorting feels like finishing, but the job isn't done until the items are gone. A bag by the door becomes part of the scenery, then it goes in the car, then it rides around for a month. Two things help: a date, and a place to take it.
A paper bag or a box with "DONATE" written on it is enough. You don't need anything attractive: you are going to hand the container over or throw it away. Keep it somewhere you pass often, not in a closet.
The moment the container is full, or on a fixed day each month, pick the day it leaves and put it in your calendar. Tie it to a trip you already make, such as the shops or the school run.
Find one or two places near your regular routes: a charity shop, a donation bin or a community group. Check what each one accepts, because many don't take broken items, large furniture or mattresses, and some have set hours.
Once it's in the car, the next step is only to stop on the way. If you can, drop it off the first time you drive near the place, even if it is not full.
If you want a record for tax purposes, ask the organisation for a receipt, and check your local rules, since they vary.
Cross it off your list the day it leaves. One pile less, and one less thing waiting for you in the car.
Want a nudge when the pile is still there?
Unjumbl is a declutter app. A few days after you finish a zone with donate items, it asks whether the pile has gone.