Hey I'm looking to get messy in my hotel I'm here for the next 2 nights but don't know what to use to get messy with if you have any ideas or suggestions please feel free to comment

You can try eggs in a bathtub put the yoks in one bowl and the rest of the egg in another don't use shells

Try a dozen on yourself

Time to raid the nearby supermarkets;

Custard/Condiments/Sauces come to mind first.
Eggs/Tomatoes/Beans/Soup etc
Shower gels/shampoo/shaving foam
Make slime out of oats/cake mix
Cakes/gateaux (sloppiest ones are usually in the frozen section), ice cream
If there's children's toys- you might find some poster paints (good to use straight away, or to dye the slime)