The handle on our watering can snapped again this morning. It is a fairly old plastic model and I think the plastic is becoming brittle with age. I repaired it last year with some Sugru and reinforcing rods but this time it broke just past that section while not even particularly full of water.
Fortunately, we also recently broke the handle off an old kitchen sieve (on inspection, it was just spot-welded to a couple of points on the rim). I think I can using the metal sieve handle to reinforce almost the entire length of the watering can handle, wrapping it in with string (enough sugru to properly hold it in place would be quite a long way towards the cost of a new can, even if I wasn’t out of supplies at the moment).