Maybe gold is the best analogy for helping someone understand Bitcoin.

Bitcoin is like gold, but in your own custody.

One Bitcoin or ten Bitcoins take up the same physical space, unlike gold, which is harder to store and conceal.

Breaking gold into smaller units is costly since it must be melted down, but Bitcoin is infinitely divisible.

Bitcoin is absolutely scarce, while gold is only scarce relative to other elements.

Transferring your entire Bitcoin wealth overseas takes just seconds or minutes, whereas moving gold can take hours or even days and requires expensive security measures.