Every so often an accessory comes along that we think is just so obvious, we can’t believe no-one else thought of it before. The WaterWeight from UK-based Inspired Photo Gear is one of those designs: an ultra lightweight pouch which can be filled with water or sand and used to weigh down your tripod or lightstand. You can wrap the WaterWeight round the legs of your support or hang via the handle. They’re also stackable, so you can add several together when you need more weight. What’s more, it folds down and packs away into its own carry handle. Weighs only 139g when empty and ten times more (1.3kg) when filled with water. Simply inspired.