Here are a couple things I've tried.

Japanese Futon

I spent a year in Japan and used a Japanese futon during that time. The mattress was about 2 inches thick and packed pretty solid with cotton. The futon was usually on a flat, but smooth wooden platform bed. I also sometimes used it on the carpeted floor if I wanted a softer surface. It was really comfortable, but you can't get away with a soft pillow. You need something that gives more support. I had a memory foam pillow at the time. I use a buckwheat hull pillow now and have a very firm memory foam mattress.

Don't get mixed up with American futon mattresses for folding frames, those run closer to 6 inches thick and are as difficult to move as a typical mattress.

Here are a few on Amazon to give you a sense of what to look for. This site also shows a three section foam pad that you can place under a futon mattress if you want something softer.

I saw "throw beds" at Target the other day for around $50. They were basically small, narrow futon mattresses. I can't seem to find them online or I'd include a link. These wouldn't be comfortable directly on a hardwood or tile floor, but if you've got a carpet or rug with some padding underneath, it feels pretty good.

I'd recommend trying something like that out on the cheap if you can before dropping the cash for a Japanese futon and possibly a foam pad.

Camping Sleep Pad

I also have an inflatable sleeping pad that's insulated for backpacking camping. It's really narrow, so it's not as comfortable as a typical bed, but the insulated aspect of it is really nice. It also packs up really small.

I slept on one of those guest bed air mattresses for about a year. I had to layer a lot of blankets under me in the winter or I felt really cold.

The reason I differentiate between industrial and commercial is that most commercial designs are just playing to a green-washed market, not selling things that are noticeably better for the world, sold in a way that's inline with those values. Have you done a proper analysis of the environmental impact of sourcing these materials, manufacturing the product, and shipping it to consumers?

At the moment, I don't feel like you've sold me or the customers that your product is better than the $28 bed shelf available on amazon, which is admittedly a little more expensive than I expected. So it feels like you're charging more for the same product. If you're comparing this to a hardwood piece of furniture instead of a plastic doohickey, you should advertise as if it is one, and plan your market accordingly. If your claim is that its better for the world, how much better than a plastic version? Than an end table? How much worse is it than just putting my stuff on the floor?

When you compare shipping 4 pounds across the country (twice I assume) it might be that a plastic version is actually more sustainable, since its lighter.

Economies of scale also certainly factor in here - your mailing issue is a prime example, but some of those costs can be leveraged too. Sure, you may never produce enough of these to get a 100k unit discount from your bamboo supplier, but you're still putting money into sustainable suppliers networks - if you're sourcing from a sustainable company and not just the lowest bidder.

I agree, it does look somewhat bulky. Back when I had it, as a 23 y/o woman, I built it alone with a lil elbow grease.

I now have the Zinus Sonoma double bed with the same storage capacity, though it does require drawers or bins underneath.

A more minimal, inspired aesthetic. VERY easy to put together and really inexpensive.

I have an older bed with approximately 12" of storage underneath. The box springs are old but I got a new mattress that's surprisingly comfortable and cheap.
Under the bed I store my out of season clothes and bedding.
http://www.amazon.com/gp/product/B005A4OQ9W

http://www.amazon.com/Rubbermaid-3Q2900CLMCB-Storage-Blueberry-Frost/dp/B002HDHM36/ref=sr_1_2?ie=UTF8&qid=1450288886

I used this door-hanging shoe rack to store my shoes, along with a few other small things like gloves, wool hats, scarfs, etc.

It's hanging on the inside of the door for the only closet I have, and despite having the closet pretty filled up with stuff it doesn't really get in the way.

We have a 2 story, 900 square foot home. We are lucky to have almost all of our space completely utilized, however, the staircase (U-shaped) takes up a fair portion of our floor plan. Also, we have no place to store our bikes. We live in an urban area where bike theft is common, so they need to be inside. Right now, they are sitting in our living room. It would be nice to have a place to put them, but normal bike stands like this won't fit anywhere in our house.