Among the 18,000 garage sales that will take place around the nation, an event at Kurri Kurri will not only help the environment but will also raise funds for country children with cancer and other chronic illnesses.

Nadine Webster and Shane East, and Rachel and Daniel Schofield are taking part in the Riverina Redneck Rally, which raises funds for the Country Hope Trust.

Their garage sale at 169 Northcote Street, Kurri Kurri will support their fundraising for the rally.

Nadine and Shane (Team Knockers n Nuts) and Rachel and Daniel (Team Flamingo) will hit the country roads of New South Wales for the rally in March next year, travelling from West Wyalong to Nelson Bay over six days.

The Country Hope Trust provides family-centred support programs to country children diagnosed with cancer and other chronic life-threatening illnesses.

Programs include emotional and financial assistance, home and hospital visits, emergency funding, holiday camps and bereavement and group support.

"Country Hope receives no government funding, so it relies on fundraising events such as this rally," Nadine said.

Their "grand bazaar" garage sale will start at 7am Saturday and Sunday, with hundreds of items for sale including retro, collectable and vintage items, jewellery, camping gear, furniture, fabrics, cottons, household goods, plants and homemade goods.

Rally cars will be on display for viewing, and there will be raffles, a guessing competition and a 100 club.

"There really is something for everyone! Upcycle, re-imagine and re-purpose is the aim of the game," Nadine said.

"It will be particularly retro and funky and fantastic," Rachel added.

"And it's a win-win: for the environment, and for the cause."

Now in its ninth year, the 2019 Garage Sale Trail is set to be the biggest yet with 400,000 people expected to take part at more than 18,000 sale events across the country - diverting upwards of three million kilos from landfill.

The multi award-winning national initiative seeks to educate Australians on the importance of reuse and the need to take individual responsibility for the impact of our consumption habits whilst building stronger, more connected and resilient communities.

Garage sales are registered at Cessnock, Kurri Kurri, Pelaw Main, Mulbring and Huntlee.

Find a registered event near you at garagesaletrail.com.au.