All sorts, but I keep back ups knowing I’ll forget (spare socks, spare boxers, spare towel, spare trousers and shirts, spare shoes, spare belt etc). Also motorbike in so this stuff can serve double purposes
A little while ago I forgot my wallet and keys – couldn’t buy anything, had to go into London for a meeting and didn’t have my oyster card, couldn’t get back into the house easily, couldn’t lock my bike at work etc etc. On top of that I was out the office for nearly a week so wasn’t comfortable my bike would be secure without being locked, had to leave it by the printer in a big open plan area of the office. Lesson learnt (I hope)