Here's a picture of the cable that comes with the Polestar 2 with the heavy "box" dangling from the outlet: https://www.polestar-forum.com/attachments/16265570190013517673519385333574-jpg.6633/

You can probably use some garage hooks to cradle that heavy bit on the cable. Any number of garage hooks would work for this, something like these: https://www.amazon.com/Storage-Hangers-Utility-Anti-slip-Coating/dp/B07XMDG83W/ref=sr_1_5?crid=15QW2180GP60J&keywords=garage%2Bhooks&qid=1650385365&sprefix=garage%2Bhook%2Caps%2C144&sr=8-5&th=1