Question on write-offs and do's and don'ts

[Dean Valadez]

Can I:

- Purchase clothes (pants, shirts, socks, coats, jackets) that I would wear for doing renovations/rehabs and write them off? 

- Shoes, boots?

- atypical tools, such as a knife or flashlights?

- iPads or other such devices? (for documenting properties, drawing rehab ideas on a digital sketchbook, checking Zillow, etc. I know I can do a lot of this on my phone, but an iPad, even the iPad mini, would be easier to view things, and to sketch ideas, etc)

- iCloud storage? (I had iCloud storage for my personal use prior to getting into this field)

I realize the above items can be used for personal use as well, which is why I am asking. What are some things you wrote off, and what precautions should I be aware of? 

Also, what are some do's and don'ts for write-offs or for the above questions? I am not trying to 'work the system' but I would like to know what is common/typical to do and what are some write-offs that draw questions/red flags.