There are many tools you can buy to help you do things faster in Farm Town.
This Chapter has posts which gives you details about each type of tool. All the links below are clickable and will take you to the post about those tools.
When using some of these tools, you will see an Eye above your yellow toolbox, bottom right of your game. This can be used to show/hide workable items on the farm. If something doesn't show that you think should be, check the eye setting. Much Larger tools like the 20x20 tools don't have the eyes you will see the picture of the tool above your yellow toolbox instead of an eye. Those have different options.
To change the Eye settings, click on the Eye above your yellow toolbox.
When the Eye is BLACK you still see everything on your farms.
When the eye is RED, you will only see the items the harvest tool can harvest, like fields, trees and flowers. Clicking on an item with the harvest tool will harvest the item then make it temporarily disappear from view, which can be easier for you when you have more items on the farm. When using the Herding Robot it will hide everything except the animals.
More details about the eye when using Full Screen mode are in Chapter 2 Basics What is the Eye for?
Should you need to get back to this post to look for other information:
Each post has a
Table of Contents link bottom right of the post, which when you click, will bring you right back here.