Its a bit late now as its coming to an end but a mate of mine lost his job just before all this kicked off, he started his own company during lockdown and trained himself up into an entirely new industry. If you were doing official training then Furlough was 100% salary, a salary which he had set ( a reasonable figure but I guess some will have abused this ) due to being in a start up business.
Its a shame the training side wasn't advertised as much. companies could have entirely invigorated there staff skill sets while furloughed.