I saw a picture of ants eating dyed sugar water on the internet and I thought of turning it into a science experiment.
First, we took 3 milk bottle lids and filled the pink one with water, the orange with sugar water and the blue one with vinegar. In between the orange and blue lid, I put honey on the ground. We placed these in a row about 6" from an ant hill. We spilled some of the water, sugar water and vinegar on the ground to draw the ants to the lids.
Within a few minutes ants started to drink/eat at the edge of the sugar water.