These include books of condolences, charitable funds, minute silences, heartfelt messages from individual members and workers at councils.
The Princess was an honorary freeman of Northampton, where there is a book of condolence for staff, all public buildings will be closed on Saturday and the local cinema will be showing the film Philadelphia and donating all the ticket sales to AIDS charities.
But the council's main concern on Saturday will be Diana's funeral cortege, which will be leaving the M1 at junction 15a, next to the town. Police have been told to anticipate up to 250,000 people.
Below is a round-up of some of the ways councils have also chosen to commemorate the people's princess.
Birmingham's Lord Mayor has launched a charity appeal, with funds to go towards the Children's Hospital as a symbol of her commitment to the welfare of young people.
Solihull MBC, Hounslow LBC, South Hams DC, North Ayrshire, Berkshire CC, Gloucestershire CC, Carmarthenshire CC, Cheshire CC and Manchester MBC opened books of condolence.
Manchester will also be firing a maroon from the roof of the town hall at 11am on Saturday to signify the beginning of two minutes' silence.
Berkshire CC, within whose boundaries Prince William and Prince Harry receive their private education, offered particular condolences to the boys.
Westminster City Council, asked how it was preparing for up to three million people arriving in the borough for the funeral service on Saturday, declined to comment.