I would take an intergalactic space suit (that provides food and water) in case an ugly space beast beames lasers at the ship like a cannonball shooting at a sea war.

I would take an oxygen propane tank ,that holds 500 oz of air,to explore different milky way universes at the speed of light.

I would take a friend -that can keep me company-so i can have lots of fun with them.

I would take a ball ( that is the bounciest beach ball)

to see how far I can kick it.  

I would take a microscope ,that can zoom up to 100,000x radius, to look into intergalactic space stations in different  dimensions. 

I would take an orange, that can transform into any object or thing, to slay demon beast circling the ships.