I have slowly come to the conclusion that if I really want to lose the kgs that I want to lose, then I need to invest in some equipment I can use at home. But it has to be cheap $$$

So I was wondering what do you use at home? Dvds, equipment, anything and everything really! Ideas would be great! Oh and my most favourable time to work out is nighttime once the girls are in bed and DH is at work
Thank you