Keep it Simple
Do you know what else is relatively cheap? Zip ties. You can get a pack of 100 zip ties for a couple of bucks, and you might even get a discount with an Amazon Prime account. If you feel like doing your part for the community, invest in zip ties. You’ll receive dividends in the form of frustrated bad drivers.
This street vigilante describes our point perfectly. Instead of encircling the car with shopping carts, they zip-tied a shopping car to the car door handle. Zip ties are also pretty hard to break, so unless you have a pair of scissors on hand, you’re pretty much out of luck.