I did Lisa-Marie's BodyRock 30 Day Real Time Challenge. Is this the one you're referring to? I loved it!!!!
I'm currently doing the latest BR challenge that started January 15.
You can substitute two chairs placed back to back for the equalizer bars for exercises like hanging knee raises and dips. You can put a broomstick across the chair bottoms to do pullups. As for the sandbag, it's mostly used for adding weight to other exercises, so you can always substitute by holding dumbbells. For things like sandbag swings, you could just use a duffle bag stuffed with something weighted. All that to say, I don't think the equipment is necessary...you can always substitute.