I bought a pilates power gym like on TVSN. It was expensive but I love it! It is far more gentle than other forms of exercise, yet you really do get a total workout, it makes your heart rate increase and works the muscles.
I have lost about 5 cm off my belly and 3 off my thighs in just over 2 weeks (also 2kg). I have been amazed at how much strength I've developed in a short period of time - I've been using it practically every day, sometimes only 20 minutes, sometimes 30 or 40. From day one, where some exercises were sooo hard to today, I notice a real change, strength and flexibility wise.