Some of the best individual fundraising ideas have nothing to do with your fundraiser itself, but the way that you promote it. Do you have a web site where people can donate? You'll want to get on all the social networks and advertise that, so that even people you don't know can help with your effort. Have you put up notices around the neighborhood letting people know what you're doing? You'd be surprised how many people will step up and help, if only they knew what you were trying to accomplish.
The more people who know about what you're doing, the more likely you are to have success with any individual fundraising ideas you have come up with. As for the actual fundraiser, you'll definitely want to stick with something that has high profits and no shipping charges or minimum orders.
One of the individual fundraising ideas you may want to consider is scratch cards. These are basically donation based, and aside from having the highest profits of any fundraiser, many people will choose to round their donation up when you approach them, so you can even make more money to donate to your cause. Also, scratch cards are easy to carry around, so you can take them with you wherever you go. But if the idea doesn't suit you, we have plenty of card-based individual fundraising ideas to check out, so have a look at what's available before you decide.