A funky and minimalistic lock springs to mind with the new Abus Granit Futura Mini, which measures 21 x 12 cm and weighs less than 700 grams.
While it might look inferior, its actually tougher than it looks, strong enough to resist even big bolt cutters. This assures you that your with the Futura, you’ll still find your bike where you left it no matter the circumstance.
The downside to this nifty new lock from Abus is that it does not ship with a mount, but that might have been the main point by the company. This is to help keep the lock mobile enough to be placed your pocket after usage.
It is currently priced at $90 and available online.