Another option and I apologize for not thinking of it earlier...
You can buy an adapter that fits onto your faucet in place of the screw in aerator. It will allow you to connect any hose with the standard hose fittings:
www.amazon.com/Claber-8587-Quick-Fit-Tap-Connector/dp/B008YQQUJW/ref=sr_1_3?ie=UTF8&qid=1477376972&sr=8-3&keywords=faucet+hose+adapter
You could then get one of those self coiling garden hoses and any sprayer head and you would then have both, a regular sink and a hose for spraying down the kids, dogs, what-have-you with the ability to control hot and cold. A self cooling hose and spray head would probably fit, for travel, in the sink.