
Bicycles are great things to ride, but awkward things to carry.
I live in a walk-up, and every so often run into my female neighbor hoisting her bicycle up to her shoulder to schlep it up the stairs. If I run into her at the bottom, I'll offer to carry it up for her; if I run into her mid-staircase I won't, because we both know it's too awkward to transfer from one person to another in that position. That's when we both stop and look at the camera, infomercial style, and simultaneously say "There has to be a better way!"
That better way is Walnut Studiolo's Bicycle Frame Handle, a simple leather strap that lets you carry your ride safely, easily, and ergonomically.

It's up on Kickstarter and has more than quadrupled its measly $3,500 goal. Buy-in starts at $30, but you'd better hurry—there's just one day left.
Comments
Every experienced bike kid knows you NEVER carry a bike with the drive chain pointing towards your body, sure fire way to get grease all over yourself.
Nice. But bike carriers exactly like this one were extremely common in the 20s, 30s, 40s and 50s. After the war, when the car culture took over, it seems we forgot pretty much everything not auto-related. Just goes to show, there is nothing new under the sun.
Why not just shoulder it like one would in cycloscross? Also, as Jacob said... drive-side carry = bad idea.
I was expecting something more along the lines of the foldable bikes I see people using these days, or the low-profile ones (which are a bit awkward but do fine for tooling around town). My issue carrying a bike upstairs isn't so much about holding it as it is about getting dirt on the walls, stairs, carpet and doors - and the grease on my clothes. And of course the fact that it is dangerous to life and limb to carry something so unwieldy upstairs every day.
How about a Vegan in nylon or a robust hemp? It would also be better than leather in wetter environments like mine.
@Andrew: you don't want to shoulder bcz that points the front wheel down, angled against the stairs you are trying to climb.
Although a leather strap for the shoulder at the intersection of top tube and seat tube would be a good idea for other circumstances.