Those look fine to me. I've deducted computers and printers and office supplies for web-work, and frankly, as long as you can argue for it, I doubt you'll have a problem. None of that looks amiss to me.
Also, if you're not making very much, it doesn't make much sense for them to come after you. If you're deducting things left and right, they would. I think home-office deduction (i.e. mortgage), is more a red flag--they may come and visit and make sure you're really following the IRS rules to a T for that.