Ideas?

So I tend to have last minute ideas, that have to be done that day. For example, today i thought about having a random bake sale and most of the funds would go towards my JDRF walk team. My mom of course told me to think it through nd come up with less spur-of-the-moment ideas. I'm pretty sure I;ll still do the bake sale, just to see what happens. But I'd also like to do more in the future. Any ideas anyone?

What about a raffle.  Half the proceeds go to the winner and half go to your walk?  I mean half is just a playful term, you can do 90/10 too.