Yes!!
The gnomes, aficionados of clockwork mechanisms and so forth as they are, in association with some summoned creatures from the plane of Mechanus who extolled the magnificent virtues of the gears, long ago hit upon the idea of such human powered contraptions - though not all of them would be recognizable as a "bicycle" to those in our world. indeed for some reason, unfathomable to most humans, the most popular design of such a vehicle actually has 5 wheels - 4 arranged beneath the seat like a wheeled footstool with a fifth extending diagonally to the front from an attached pair of handlebars which ends up looking a little, to humans of our world, like the front wheel/handlebar assembly of a custom designed hawg (the motorcycle). This particular vehicle typically has a large basket (almost to the size of what we would see as a side car of sorts) mounted to either side of the drivers seat and is used for delivering these things. These contraptions are loved by the gnomes, though they mostly know them from museums and antique contraption shows this sort of design having been passed over quite some time ago in favor of larger, more exotic, and generally magically powered rather than human powered vehicles such as the gnome submersible, the Apparatus of Kwalish, and other sorts of creations.
Edit: I, of course, meant gnome-powered rather than human-powered!