Sadly armoured car blagging isn't possible these days due to tracking technology and exploding dye security boxes
You could try extortion or loan sharking both slightly dodgy or the protection racket had a few vacancies in the area
Failing that set up as a local council and charge people to park on their own streets (shocking I know but good Money) then take it further and charge for taking away their garden waste which they have already paid for in their council tax, and fine anyone who's mad enough to put anything in the wrong bin, whistle too loudly or breath in fresh air 😉
Sadly getting paid to be on Jeremy Kyle has been taken out of the equation (just think of all those kids who will never know who their true father is 🤔)
Failing that, as pointed out earlier, go honest and do a decent days work
PS I think there are a few corners left locally where you can shake your booty to advertise the oldest profession !