Funky Fluids is a mod that adds various fluids with interesting and weird properties.
This is a list of all the fluids it adds:
Oobleck
A non-newtonian fluid that increases in viscosity the more force you apply to it. If you approach it slowly, it will behave as a liquid, but if you impact it with a lot of force, it will behave as a solid. This means that you can run and jump on it without sinking into it.
Liquid Crystal
It flows like a liquid but it behaves like a solid when you touch it. This means that you can stand on it.
Melonade
A delicious drink made of watermelon and sugar.
Silly Putty
Similar to oobleck but it's also bouncy, which is of course an improvement.
Redstone Suspension
A suspension of redstone in water, it emits a constant redstone signal with the strength depending on the level of the fluid.
Magnetroleum
A liquid that pulls entities in the opposite direction of the flow, essentially pulling them towards the source block.
