Snow Days

This would work well for Chicago/Brittany:

"Boston has codified its citizens' right to benefit from their backbreaking snow-clearing labor; a city law says that if you dig out your car in a snow emergency, a lawn chair or trash can renders the spot yours for at least two days while you're away at work."

www.marginalrevolution.com

"Before snowfalls, a parking space belongs to the one who occupies it: you leave it, you lose it. In wintertime Chicago, however, excavating one's car changes the system of property rights. Once car owners dig themselves out of their snow cocoon (Chicagoans carry snow shovels in their trunks for this), they claim the place they cleared as their own. How? Diggers routinely place lawn furniture, buckets, two-by-fours, bar stools, orange highway construction cones and other markers in the space they have just dug out. That means the space now belongs to the excavator. When he leaves, the markers dictate that the space must sit empty until the owner returns. "People do look at these spaces as their own property," a local law professor comments."

www.econlib.org/library/Columns/Mcchesneysnow.html