That Starret micrometer for £1?
Three step drills from Aldi for £5 that cost £35 at Machine Mart (and as far as how they work, they are worth £35!)
Various cheap digital clipers
Aldi cook's blowtorch
Slightly foxed Record No. 3 vice F.O.C. from the tip?
Or things I just use over and again?
Machine Mart carbide tipped scriber.
Set of three 1",2" and 3" squares from Chronos
Ball-ended allen keys
Really cheap 4" files from B&Q – rough as a badger's bum but the chew away anythingand you can finish with a smoother file.
Or the cheap surprise that keeps going?
Woolworths "Dremel type" rotary tool bought 12 years ago and still going strong.
Machine Mart pillar drill?
Neil