I want to itemize the purchases my husband made for tools for his job

If they are small hand tools, you don't have to depreciate them. Simply add them together and include in the supply section. (Instructions below).

If they are more substantial, you should depreciate them by saying "Yes" to the "Did you buy or own any items for use on your job?" question.

Here's how to get back to job-related expenses are reported on Form 2106 (Employee Business Expenses).

1.       Open (continue) your return in TurboTax.
(To do this, sign in to TurboTax and click the orange Take me to my return button.)

2.       In the search box, search for 2106 and then click the "Jump to" link in the search results.

3.       At the Tell us about the occupation you have expenses for screen, enter your occupation.

4.       Click Continue and follow the onscreen instructions.  

If you land on the Job-Related Expenses Summary screen instead, you can either Edit expenses for an existing job or click Add Another Occupation to enter expenses for a new one.