Fundraising ideas for child

[onceuponatimeinfairyland]

DD (6) wants to do a sponsored fundraiser to help the local community. We were thinking of something that she can do over a period of time that involves something active. DH has mentioned doing the equivalent of a triathlon but spread out over a month but I'm not sure if that would be too much for her age? Any other ideas greatly appreciated

A boy at DS’ school was about 6 when he raised money for a charity by running a certain distance (can’t remember how many miles) but he did it in small chunks suitable for his age. A triathlon sounds good and you could break the distances down so they are cumulative over a period of time.

How about collecting litter - something that benefits the community while he raises sponsorship?