I'm trying to keep the carbon footprint low. Food and drinks will be locally sourced and extras taken home, decor will be reusable, I'm not using real flowers, nothing is disposable. Favors are bottles of wine in glass, so they'll keep if guests don't take them. Invitations will be on recycled paper and sent via USPS. These are all basic and listed in every sustainability forum I've found. Does anyone have any other ideas? The entire event is inside.