Driving myself crazy!

My showers (I am having two as its the first grandkid on both sides and my husbands family lives no where near mine) aren't until Aug 29th and Sept 14th!  I desperately want to get things set up, but keep getting told not to buy anything as I will be getting a ton at my showers.  I feel like I'm just sitting around waiting for everything!  Are you ladies buying things for your nursery to get it set up or waiting as well?  Is the waiting driving you as crazy as it's driving me? LOL.