OH is a builder so we gather all the leftover bits from jobs, old double glazing makes cold frames set on leftover breeze blocks, scaffold boards used as edges for veg beds and round pig pens to stop them tunnelling out/under, redundant windows have gone into our buildings replacing rotten ones, pallets for fencing, herding &temporary shelters. Spare wood goes into fencing & field shelters. Tonne bags get used for storing broken down huge round bales of straw, they make doors for arks. Scaffold poles for farrowing rails, fences, making post holes.
I also hoard toilet & kitchen roll inners for plant pots, bubblewrap, old gift wrapping paper, use old b'day cards cut up to make present labels or new b'day cards, odd socks make great dusters, plastic supermarket trays saved thro the winter for when i have my fruit/veg to harvest thro' the summer, crates (cannot have enuff of them) for storing apples, pears, etc and carrying plants from greenhouse to garden. Old feed/ seed compost/grow bags recycled as hanging basket liners, etc.
I have to be really strict with myself!

or else we'd keep alsorts of stuff!
Foodwise we stashed enough apples for the pigs & us and we're just using the last of them now, we made oodles of tomato sauce for the freezer, my pal makes chutneys with the green ones and we store pumpkins & squashes.
Our other big no huge stash is of pig muck, winters muck heap becomes summers pumpkin & squash heap and afterwards into the veg garden, polytunnel & flower pots.
