The single red Lego Storage Brick is normally £6.99 but Tesco Direct have a third off making it £4.65. It's also included in the Clubcard Boost so if you have any vouchers to double up you will get even better value. These aren't huge at 18 cm high, but they are very handy and look wonderful on a shelf next to all the rest of the Lego models.
There's never enough storage for all the Lego pieces in our house, I seem to find them everywhere. We have some of these Lego Storage Bricks and they are very handy for keeping all the stray pieces in, plus there's the added bonus that they can stack with each other like regular Lego bricks.
You can use the free click and collect from and Tesco store, or home delivery will add an extra £3 to your order.