Sacks for sure.
IIRC the earliest wooden casks we have evidence for were made in Egypt or Sumeria around 2500BCE. Probably Egypt as wood was scarcer in Sumer. I'm too lazy to check the 'net :-)
The Romans certainly used wooden casks, though they were rarer than amphorae.
We have written evidence of hay bales from the writings of Colunella (sp?) from the 1st century CE though I don't think we know what shape they were.
Bales of cloth, piles of wood, bricks or stone, market stalls, hand carts, wells, water troughs, etc. would all add clutter.