What tools will help me remove an object from a toilet's siphon jet?
Option #1 is always the best: use a coat hanger with a hook bent on the end.

As a second option, hemostats are pretty handy, but may not be strong enough to break plastic. But perhaps it will help you hold the ring while you cut it with an exacto-knife or some wire nippers.



If you drain the water out, then you will be able to use something like a hot knife... or just use a blow torch to easily heat a blade or a coat hanger hook. A hot blade and/or hook be may helpful for chopping the ring in two. Don't heat up the hemostats or else it will destroy the spring-quality of the steel. If you don't have a torch, a lighter will work... but try not to burn your thumb or don't let the lighter melt (pop).

Or if you are super crafty you could DIY a hot knife with a soldering iron and an exacto-blade.