Kickstarter is a great platform for doing both. If you were trying to raise money for the development of a tangible product or invention, Quirky is a crowdfunding platform made specifically for this but I've had a successful campaign on kickstarter raising money for my invention, so that works too. Kickstarter is more known.

The biggest mistake most people make raising money through crowdfunding is that they don't give enough value in return for the amount of money they are asking for their pledge levels. That goes for a business innovation model or product innovation model. For each you need to prepare your campaign a few months ahead of time, have a great marketing plan in place, tell a great story with a great quality video, and also give backers reward levels that they can't turn down.

If you want to take your campaign seriously you should have a dozen members on board and plan to spend over $10,000 on campaign.

Treat crowdfunding as if you were running a business.

Hope this helps!