I wanted some new weight and instead of buying individual dumbell weights, which you get used to pretty quickly, I bought a cast iron dumbell set from Tesco! It was only 20pounds and in totally it's 17kg in weight. There are 4x2kg, 4 x1kg, and 4x0.5kg so you can do loads of combinations. The bars weigh a little bit too so at the moment, i'm doing 3.75kg I think, when I was doing 2kg before so it's heavy but good fun!