Tungsten is my escape artist. Giant office
clips, scotch tape, packing tape--it doesn't matter. He'll find a way out.
While he normally won't go far before curling up to sleep, he did have fun,
once, by climbing up my cabinets and tossing most of my spices on the floor
before going to sleep under a pile of plastic grocery bags.
Tungsten is a grey/white/silver metal with
a very high tensile strength. It is frequently used in wire and
filaments for incandescent bulbs.