Step 1: Mattress.
Reading "green" literature takes you down a rabbit hole. There's a lot of unhealthy stuff in the world! And while I don't necessarily think one's gotta go organic and all-natural everything, there are a lot of blatantly unhealthy manmade things in the world that Erin and I have been trying to avoid. We're not chucking out everything we own, but we're certainly rethinking how we approach buying things when we have full control.
Take a mattress. The ones you see in the store are lined with fire retardants known to cause cancer. They've got springs that wear out, layer after layer of synthetic materials, and they smell funny. That smell? VOCs and other nasties. Given that we'll spend a solid 1/3 of our next few decades in extremely close proximity to our mattress of choice, I'm okay with investing some time and money in alternatives. If it turns out that there's nothing whatsoever wrong with the standard mass-produced mattress, I'll have wasted a few bucks. If it's the other way around, it's hard to put a price on that.
It didn't take much research before I honed onto 100% latex. There are a lot of "green" and "natural" products out there with coir, bamboo, and latex, but nearly all of them -- many of which cost $3000 and upwards -- have synthetic layers. No thanks. I opted for 100% latex, 9" of the firmest stuff you can buy, wrapped in an organic cotton cover with a thin layer of quilted wool. No fire retardants, no plastics, nothing. Some assembly was required, but I save $1000+ vs. buying one the old-fashioned way.
The next step was to get a mattress topper. Life is complicated! It turns out that pretty much every topper on the market has plastic layers in it. All the effort of a natural mattress seemed wasted if you're going to put a toxic layer between you and it.
I latched on to virgin wool as a good choice. Untreated and naturally water resistant (not waterproof). Unfortunately, you're looking at $200-300+ here unless you get creative. Rather than buying something that calls itself a virgin wool mattress protector and charges you accordingly for the privilege of buying it, I bought us a twin-size virgin wool blanket on clearance. It turns out that a twin is almost the exact size of the footprint of a queen-sized mattress! It fits perfectly.
And that's that. For now, the mattress sits on the floor. Erin's visit is three weeks away; I'll sort out the bed later.