South Yorkshire firefighters were called out to tackle numerous fires across the area last night.
Arsonists set fire to a portable toilet at Victoria Quays in Sheffield at 9.50pm on Thursday evening.
A crew from Central Fire Station spent about 15 minutes tackling the blaze.
Yobs struck again at 12.30pm when they set fire to a wheelie bin outside a home in Algar Drive, Arbourthorne, at 12.30am this morning.
A crew from Mansfield Road Fire Station spent 15 minutes putting the blaze out.
Over in Doncaster a hedgerow accidentally caught fire in Geeseness Lane, Fishlake at 3.30am.
Thorne firefighters attended and used a single hose reel to extinguish the blaze.
A fire brigade spokeswoman said the hedge had caught fire from embers that had drifted over from a car that had been set alight by arsonists earlier in the night.