I think i was 14 when I started to build up my own workshop. I was given the space and the use of any of my Dad's tools I could use without being caught… I had to scrounge my own junk furniture etc. for things like making a workbench.
I had a 4" quick release vice – reclaimed by the aged P some 33 years ago
a venerable Juneero machine, and antex soldering iron, a nice steel rule (I still have it!) a decent modelling knife, pliers and assorted junior hacksaws, screwdrivers (including a meccano one made from bent wire) random allen keys etc. On a good day i could sneak access to my dad's brace and bit and I took possession of a slightly blunt hardpoint saw (in the days when these were a novelty. Curiously all this random junk was complemented by a really high quality Eagle multimeter (almost AVO standard) and my Dad's Heathkit oscilloscope – he had another one of the meters (without the replacement bunch of 1W 1ohm resistors in parallel for the current range)) a real AVO and a 'proper' scope. I was very pleased with eh screen hood ogf teh scope, which I made from a plastic flower pot with the bottom cut off.
These saw a few model boats and planes, a few random electrical and TTL electronic projects, a decent hifi amp and speakers, a model railway and lots of plastic kits.
I even pre-empted the modern trend for valve-based fuzz boxes by building the amplifier from an autochanger into the chassis of a lightly butchered 'Trough Line' radio (someone had pinched the tuning capacitor – at the time it was obsolete, but not a collector's item!) I just added a 1/4" jack at input and output, then into my 'power amplifier' which was made from another autochanger, but with the turntable discarded and a 10" speaker grafted into the box.
Amazingly these adventures did not cause any loss of life, more by luck than judgement.
Sadly, when I went off to Uni, I lost my workshop (a draughty 6×6 victorian 'conservatory'
but kept some of the gear, although it was nearly 20 years before I was able to reclaim the multimeter!
Looking back, I was extraordinarily lucky, at the time, I assumed that it was perfectly normal. We were neither poor nor well off, but my parents gave me a space of my own, which is the best thing an inquisitive boy can have. I think I spent more time in it, just enjoying being there with my junk, than I ever did making things. To be honest, i still enjoy just sitting surrounded by my 'junk' and dreaming of what I can do.
So the minimum? Something to dream about, and a little space to dream in.
Neil