Usually I only publish photographs (etc.). This is the first (in 5 yrs) exception of the rule.
We have a very inspirational neighbour. Alan Raubenheimer is 90+ years and still creating useful things; merely out of scrap. Home trainers are quite expensive for a pensioner and Alan wants to keep himself fit. Hence the Raubenheimer Home Trainer or ‘exercise bike’ if you prefer. Alan just went viral on YouTube with his latest invention: