My kids had CamelBak bottles when they were younger, and they held up really well on many outings. There were several cute patterns as well. If I remember correctly, there was a straw that flipped up for drinking.
Hydration and nutrition while cycling are incredibly important. Aesthetically these CamelBak water bottles are sleek looking and come in a variety of colors to match your bike/kit. Functionally they are incredibly easy to use with a powerful stream that comes out of the nozzle with a small squeeze to make sure you hit the target when cooling down or hydrating. I specifically have the insulated version which help to keep my water cool. On hot days I can still get a nice blast of cold water after a couple of hours.