S'well is selling limited edition Harry Potter water bottles and no spell is needed. The new collection features four 15 oz stainless steel bottles, including one with the famous Hogwarts crest and another displaying the notable lightning scar, so each bottle is great for any house (yes, even Slytherin).
S'well bottles are designed to keep your drinks cold for 24 hours or hot for up to 12 hours, meaning they can be used for more than just water. Sadly, they can't turn your water into butterbeer (or rum in Seamus Finnigan's case).
The collection also includes a travel mug for any coffee or tea drinkers. The 16 oz mug has a leak-free top to avoid any spills during your commute and comes in all-white featuring Harry's glasses and scar.
This bottle won't magically increase your water intake (is there a spell for that?), but carrying around one of these might just be a good start.