Knives and an extendable baton were handed in to officers at Ely Police Station over the weekend.
A spokesperson for Cambridgeshire Constabulary said: "It is now illegal to own items like these in private, as well as public.
"Weapons can be disposed of by taking them to your nearest police station in a taped-up box where they will be disposed of safely."
More information about knife crime can be found on the Cambridgeshire Constabulary website.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here