Windows and locks on vehicles in Acorn Close and Catherine Close, Kirkby, Nottingham Road and Sandy Lane, Mansfield, Skegby Road in Sutton, and Stonechurch View in Annesley were targeted between Wednesday 26th and Friday 28th February.
A Severn Trent Water jacket, tools, diesel, and fishing rods and gear were stolen from the vehicles, Nottinghamshire Police said.
Vehicles were also targeted in Bassetlaw, Newark and Sherwood over the weekend.
Police are urging vehicle owners to keep their vans garaged where possible or parked in well-lit areas, and not to keep tools or other items inside vehicles overnight.
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Anyone with information is asked to contact police on 101 or Crimestoppers on 0800 555111.