Rent out your investment skins or skins you're not using.
It's not a lot of money, for example I get 0.3 $ every day I rent out my FT Karambit Freehand.
You get reimbursed 100% steam value for every skin that gets lost, but in store credit. Then you can buy another skin for -25% of steam value.
Support is shit, takes a while to get an answer. Getting Paypal withdrawal takes 30+ days now, which is crazy.