Need Cradle Sheets & Bumper Pad

My daughter is due in less than 4 weeks and is still in need of boys cradle sheets and bumper pad.
Can't even find them at Walmart or Babies r Us.

I'm not sure of the dimensions needed but for our (heirloom) bassinet we just used pillow cases instead of sheets.

... does a cradle really need bumper pads? would they still be in it by the time they start moving around much in their sleep?