If you pack one thing this summer make sure it's the Ergo Digital Luggage Scale (though by only packing one item you somewhat negate its purpose). As the title suggests it's a scale for your luggage, meaning that you'll no longer have to worry about paying those extortionate excess baggage charges. Simply pop the scale into your hand luggage and make sure that on your flight in and out your luggage is light enough to get on the plane without breaking the bank. You clip the strap onto your luggage, lift the scales up until the luggage rises from the ground and wait for the beep. Then all you need to do is check the display to see the total. Its ultra sleek design makes it look extra sexy - well, as sexy as a set of luggage scales can look. It's very handy for those of us who can't resist the allure of the souvenir market in Los Cristianos (sure, it's less than 20 euros for the African wood carving, but it'll cost a darn sight more if you end up getting stung at baggage check in). This summer, take the scales and save a packet.