Do they stack if you don't use them?

The power to stop any war but only after the war is finished

Of course not! You have no control over WHEN they shoot, they just shoot randomly within the 10 days!

The power to sneeze with your eyes open.

that is stupid

but only in complete darkness and solitude

so could I just gather up an army of cotton balls over like 5 years and then take over the earth?

hi

The power to shoot glue out of your hands, for a millisecond, then do it again in a month

the power to resist browsing dank memes (because it is impossible to resist)