As an example, here is a simple spreadsheet.
Here is the spreadsheet once I selected it and clicked on Insert Table.
Note the arrows in the headers of each column as well. Here automatic filtering has been turned on so with one click on the arrow, there are different sorting options available which can help isolate particular inventory items.
I admit, I thought originally tables were nothing more than pretty color on a spreadsheet and I have found that they are much more. I suggest that the next time you build a spreadsheet or work with one, try converting to a table and see all of the available options that it provides. Tables are powerful tools and will help you make the best of your spreadsheets.