I think Drox mentioned that he might be adding a similar function to his UI for an upcoming release... but I don't know if that was "might be" or "will be" or when the next release is...
But, you could download "Mother's Complete". The file with the harvesting window is VGUIHarvestingDisplay.xml - put that in the Drox/Windows folder.
You'd have to also add the mothers_widgets_01.xml and mothers_widgets_01.tga to your Drox/Textures folder.
Then go into the Drox folder, edit skininfo.xml. Find the line that says:
After it, add a line reading:
Save and close that file. edit index.xml. Find the line that reads:
Change it to:
<!-- <Window filename="VGUIHarvestingDisplay.xml"/> -->
Find the line that reads:
After it, add a line that reads:
Save and close. Should be good to go.
The reward for toil is more toil. If you dig the best ditches, they pay you with a bigger shovel.