Does he have a rhino like hide?
I use all sorts to prop open windows, I can reach them all though so no need to use implements to close them.
Depending on how far back things are on the top shelves I use the massive and heavy washing powder box to stand on or a spatula. I have some bought for the purpose folding steps, lightweight, easy to reach, 3 steps high, live in the kitchen. But no I have to go to the other room, pick up/drag the washing powder box.
A first aid box has really important document like house deeds, birth certificates etc, my first aid kit lives in a roses tub? Yeah, no I dunno why either.
A childs pop up tent is used for the dog to hide in when thunderstorms or fireworks. Throw a thick blanket over it, throw a blanket or a jumper of mine in it and he will be happy until the storm is over.
A large net washing bag doubles as a dry flat thing.
So those clothes that annoyingly have to be hand washed and dried flat (I only own one item like this) place it in the net bag as flat as you can and hang the whole lot out or string the bag between two parallel washing lines, making a hammock type thing and lay your item on the hammock bit.
Slightly off topic but if you use yoghurt as a marinade or part of a marinade, and buy a far too large pot of the stuff as I did recently ( I needed 3 tablespoons, I bought half a litre? ) there is a French yoghurt cake you can make. The pot is the measure, it doesnt have to be all that accurate. I added frozen fruit but plain is good too.
I used this recipe, but there are more out there.
https://www.thelondoner.me/2016/03/french-yogurt-cake-easiest-cake-world.html