My first full time job was as as a trainee manager in a Motorist Discount Centre (the owner of the chain had ambitions to be bigger than Halfords, and have more branches which he managed the week before it folded!). I remember our best trading days were Saturdays, and our fastest moving items were Mini exhaust systems (£9.99), Mini cylinder head bypass hoses, Cortina void bushes, and those miracle oil things (there was another brand other than STP that I seem to remember being popular).