[jhart99]

One really tricky part of this is going to be that gallium alloys or otherwise attacks a LOT of metals including aluminum and steel. Still should be fine in glass or maybe there is a passivation trick that can prevent gallium attacking the surfaces.

Otherwise platinum on carbon (and now platinum/gallium alloy) can do lots of useful reactions mostly hydrogenations.

[philjohn]

It was a fun experiment showing my kids what some leftover Thermal Grizzly Conductonaut did to a soda can.

[kurthr]

Don't get that anywhere near your wedding ring!

[Vladimof]

I put some gallium on my aluminum car engine

[ncmncm]

No more engine.

[girvo]

Pt/C and Pd/C can also do super neat hydrogen rearrangements. Fascinating catalysts. Though they like to catch fire when in contact with air, annoyingly.

[hoseja]

It also oxidizes really fast. Any time you see liquid gallium in a video it develops a nasty sticky crust very fast.