Lava, Tar, Mercury, Oil, Propylene glycol
water dissolving in to lemon juice
All the miscible liquids may form the solutions as 1-Alcohol in water, 2-Hexane in benzene, 3-acetone in ethyl acetate etc.
lemonade and mango juice
Rubbing alcohol is relatively a liquid-liquid solution. There's water and some kind of liquid alcohol compound in it.