Rug(s), Carpet/Lino offcuts (Princes Risborough HP27)

I wonder if any of you lovely re-users and recyclers might be about to offer any old rugs or perhaps end of project carpet or lino offcuts?
I'm looking for pieces starting at roughly a metre squared/ a few feet by a few feet at minimum (or I'll be tripping over edges and corners a lot).
They will be used on the floor of a garden 'room' aka a shed doubling as an office, so I'm happy to have a mismatched patchwork of floor covering but am on a zero budget.