Start by making an array, Toolnames.
In System -> On Start of Layout
Toolnames -> Push Back "Hoe" on X axis
Toolnames -> Push Back "Shovel" on X axis
... "Hammer", etc,
You then have an array full of tool names.
Then in Toolstuff, you just need one Condition, instead of one for each tool:
Objects -> ItemGroup = "Tools"
But the action is,
Objects -> Set Itemframe to Objects.AnimationFrame
Objects -> Set Itemname to Toolnames.Objects.AnimationFrame
In both cases, Objects.AnimationFrame will be treated by Construct 2 as just a number.
So if the animationFrame was 2, it will set the ItemFrame to 2, and the Itemname to Toolnames object 2- which would be your hammer!