Stanley Knife

A Stanley knife, utility knife or box cutter is a knife with only one side of the blade sharpened. It is highly recommended to only get one with a retractable blade, as this allows it to be kept safely in a pocket whilst at the theatre.

A stanley knife is much better than a pair of scissors for cutting gel. Apart from a paper guillotine, you will not find another tool more useful for it. During a get in, a stanley knife can be used to cut cable ties or tape. This is especially useful with hired equipment.

UK Law
Check UK law before carrying a knife in a public place. There is a link to a relevant section of the Criminal Justice Act below, but it is up to you to decide if you think it is legal to carry a knife in public.