Okay, I'm not exactly a crowdfunding expert but I do know about online marketing, and I don't think that's really the best way to go unless you could somehow get these celebs involved somehow.
The best thing I think you could do is auction these items on e-bay as well as start a crowdfunding campaign for your organic farm and technology center.
The money that comes in from your sales can be a huge help and it can be your ticket, depends on how much they go for.
My recommendation is to sell them and also crowdfund.
And on a personal note, I think it's awesome what you're trying to do!