As far as I understand tax law (which isn't very far), when filling out your Schedule C, you can write off 50% of the cost of the PC and lab equipment without raising too much suspicion. You can also claim them as assets and claim depreciation on them. You can also claim the portion of electricity and internet used, unless you're a full-time W-2 employee working from home.

You can also film yourself doing these projects and upload it to YouTube, which means you have a video production business.

My understanding is this is how most upper-middle class people and minor millionaires legitimately reduce their tax obligations.