Knipex CoBolt tiny bolt cutters

These have a lot of cutting power for their size, up to 3.6mm piano wire, and for softer stuff they'll cut anything you can fit in their jaws. They come in a dizzying variety of models - mine are the 71 21 200, with an angled head for flushier cutting and 200mm handles, but there are variants with shorter and longer handles and with straight heads.

/things-that-cut/