Mileage, or actual vehicle expenses times the business percentage of use.

Cell phone (probably needs prorating too).

Water/supplies provided to clients.

Can't think of much more.

Did you google this:

uber driver tax reporting

Have you filled in Sched C for clients in the past, or is this the first year you are working on other people's taxes?

If you are doing your own taxes, you are in the wrong place on the internet. Uber has your info, here:

https://www.uber.com/drive/resources/tax-tips-for-drivers/

TurboTax has this:

https://turbotax.intuit.com/tax-tips/self-employment-taxes/tax-tips-for-uber-drivers-understanding-y...