I use metric, so you tell me weight in kg and I imagine it in half the number of (2 liter) water bottles. Which I have a pretty good intuition for since I often carry anywhere between 1 and 12 at a time.
Of course if I had to suffer imperial, I would like analogies as well.
Since moving to the UK, I'm still trying to get used to medieval bollocks. Gimme analogies, because Stones used to be 1 Stone of wheat was a different weight to 1 Stone of, say, actual stones. Mental.