As little as possible. One of my first Saturday jobs was being an assistant to the van driver on a bakery delivery round which meant a very early start. On one occasion at the bakery I was asked to put the raspberry jam inside the doughnuts using a large hypodermic syringe device. The jam was runnier than the jam sold in jars to make the task easier and so I squirted the red goo into about fifty doughnuts. The following week when I reported to work the bakery said they received complaints cos when people bit into their donuts a huge jet of jam shot out of the doughnut, often covering the person eating it or somebody near them. It seems I was a little over zealous putting the jam into the doughnut. They didn't ask me to do that job again.
I'm officially retired now, had been self-employed since 1996 and some customers will occasionally phone in some work which I will carry out. I install, repair, maintain public address systems in large business premises, schools and colleges. Those microphone paging messages and background music you hear in the likes of supermarkets and large stores like IKEA? That's the stuff I do and in schools the microphone messages and class change pips is what I do.
Can also do and have done: CCTV; Door entry systems; Fire alarms; hall and club sound systems and Stage lighting.
Have been previously in this life: Reporter/photographer; Shop manager; Van driver; Kitchen Porter; Industrial radiographer; TV Repairman; Surveyor's Assistant; Barman and for 41 years ran a mobile Disco. My favourite job and the best paid was as an industrial radiographer but technology advances pretty much made me redundant in that profession.
It has been a varied life