No, not a cooking recipe but a recipe for avoiding stress and wasted time.
Many DIY products have a shelf life and more than that they are better used fresh.
Probably the most extreme example is plaster which is best consumed as soon as possible after it pops off  the production line. The main reason being that as it ages it gets a shorter working time meaning it goes off (i.e. sets) faster after mixing.
For things like floor tile adhesive and some other cement-based products the reverse is true. So if you mix up old floor tile adhesive particularly where the bag has been opened a while you can find that instead of it being ‘rapid set’ as stated on the bag it can take ages to go hard in some cases 24 hours. Grout is less susceptible in my experience.
Paint of course is never much good when it has been stored. Either it will skin over (less likely these days with water-based paints), it might go lumpy (especially if any skin is stirred in) or the constituent colours will separate out into layers. The best thing to do with old paint is throw it away because it will be a false economy to spent ages fishing out the bits or painting out the lumps.
Decorators caulk (flexible filler) also suffers if it is stored where frost can get to it. I’ve had some in my van that I thought would be okay and it had turned into a near solid by the cold.
If you have left over wallpaper paste this can be bottled up (say in an old milk container) but it will go too liquid and not at all sticky after a fairly short period of three to four weeks.