Do you need a reminder to drink enough water? The official recommendation is for eight glasses a day, but it can be tough to remember to sip regularly so you don’t have litres to drink at night. A new product is pitching itself as the answer: the Ulla (€24). The smart sensor knows when you aren’t following your optimal hydration schedule (if you have one) and will give you a prod now and again to remind you to lift the bottle. It clips on to the outside of your bottle and it turns itself off at night and on again in the morning, so you are not reminded unnecessarily during the night to drink up. You could just develop the habit yourself, or put an hourly reminder on your phone, but then you wouldn’t have a coloured blinking piece of tech attached to your water bottle, would you?

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