I believe the term is pay forward ? @wheelsonfire of this parish sorted a pair of hydraulic brakes for my grandsons bike mucho gracias amigo and now it’s my turn  so now I have a pair of Avid BB7 cable brakes going begging , probably could do with new cables but the pads have loads of meat left on them . I’m in Street in Somerset if you live local and want to pick them up or I’ll pop them in the post .