The Impersonator - Pseudoscorpion
Pseudoscorpions are generally beneficial to humans since they prey on clothes moth larvae, carpet beetle larvae, booklice, ants, mites, and small flies. They are small and inoffensive, and are rarely seen due to their size. [wiki]
I found this tiny creature hiding inside a kitchen sponge with only his long pedipalps sticking out.
As soon as I placed the sponge on a cloth for better view the Pseudoscorpion came out of his hiding, scuttled all over the sponge and cloth and then went back into his hide.
Size: 8mm approx