Steamgifts post
https://www.steamgifts.com/discussion/1N3vE/good-friend-in-need-of-help-giveaways-inside
Original post:
https://imgur.com/gallery/EnrTsiU
Gofundme campaign:
https://www.gofundme.com/dad039s-cancer-fund
As Gofundme only allows for donations $5 and over, you can also donate via Paypal here:
https://paypal.me/Miyuutsu
If you're more of a social media type, you could consider Tweeting/posting/re-tweeting something like this:
https://twitter.com/FakeNameOF/status/97684215547704115
