Indiegogo/Crowdfunding Question

[starsmixi42]

Hi All.

I am in the process of launching a crowdfunding campaign on Indiegogo.

My project is a women's fashion/technical ware item (for context), but only at the concept stage.

I want to include perks, as I've ready campaigns with perks fund better, but my issue is, unlike most campaigns that are already at prototype stage, I can't just offer a good deal on my product, as it hasn't been made yet - it's just a concept...

So, what things could I use? I do have a website for the brand as we sell some other merch, so I am thinking stickers, and a limited edition/funders only branded t-shirt from the brand (Not one I already sell).

But apart from that, I'm stuck. Ideas I had included were promo codes for my website, or a future promo code/discount for if/when my item is finally made...

I can give more info if needed, but thought I'd start here!