Now in MoveitPro, you can add a temporary item in the system on the estimate itself.
So these items will not show up on future estimates this is only for the current estimate you are working on. If you would like to add an item to your default list you can find that in the manage tab
On the second page next to where you can add a Room you will find the add an item button.
When you select the button this window will open where you can add the name of this temporary Item, the Volume (CuFT,m3), Weight (Lbs, Kg), and estimated Moving Time (This is in Minutes and how long it would take one person to move it.)