Burglars stole jewellery, including a diamond ring, wrapped Christmas presents, an iPhone and Canon digital cameras and lenses after ransacking a Spalding home.
Police believe the intruders may have fled from the house in Monks House Lane carrying the property in two pink holdalls stolen from the house.
The break-in happened between 7pm and 11pm on Friday.
Police say the burglars may have first attempted to get inside the house through front windows, but then forced a conservatory door.
• Witnesses are asked to call Spalding police on 101 or Crimestoppers, anonymously, on 0800 555111.