Open Family Australia is an organisation dedicated to helping at-risk and homeless youth across the country.
According to statistics on its website, there are currently over 30,000 young Australians aged between 12 and 18 years sleeping on the streets.
The Open Family mission statement reads: "Our mission is to change the lives of homeless and at-risk young people by working with them individually, offering long term and focused intensive support."
In order to deliver this aid, the charity organisation needs ongoing funding and support. Yet as many nonprofits will know, encouraging people to part with their cash and donate to a cause is not always an easy achievement.
This may be why Open Family has got a little creative with its latest fundraising campaign.
The 21 Challenge inspires people to take on a new goal or task, or even to give up a favourite activity such as watching television or surfing the internet, for 21 days in June.
By seeking sponsorship for their efforts, they can raise money for the country's at-risk youth.
To inspire people to get on board, Open Family used a comical and approachable advertising campaign.
Featuring bright blue posters with slogans such as "Challenge your workmate to listen to Justin Bieber every day" and "Challenge your boss to work out in bright tight lycra," the ads have been turning heads and capturing attention.
Although the challenge officially started on June 1 and finished on June 21 - which is the longest night of the year - it is not too late to get involved and donate to the cause.
The campaign may only be held in June, but the issue of youth homelessness is a problem all year around.
All you have to do is head to the 21 Challenge website and donate - you don't even have to know a challenger to support the cause.
While on the site, you can also browse what challenges other people have decided to undertake - this could give you some inspiration should you decide to participate next year.
A few people gave up Facebook, one person went vegan and two girls even gave up their beds for 21 days and slept on the floor instead.
The charity organisation has reached over $100,000 in donations so far.