Favourite Movies
Cars, Zootopia
Favourite TV Shows
Gravity Falls, Steven Universe, Adventure Time, Regular Show, The Amazing World Of Gumball, Osomatsu-san, Boku No Hero Academia, One Punch Man, Gintama, Naruto, One Piece, Bleach, Barakamon, Tokyo Ghoul
Favourite Bands / Musical Artists
Pentatonix, Maroon 5, Linkin Park, Imagine Dragons
Favourite Writers
Cathy Cassidy
Favourite Games
Sonic Battle, Sonic Adventure DX, Sonic Generations, Undertale, Dust: An Elysian Tail, Crypt of the Necrodancer, The Stanley Parable, Team Fortress 2, Overwatch, Battleblock Theater
Favourite Gaming Platform
PC, Wii, NDS (emu)
Tools of the Trade
Adobe Photoshop CS6, Wacom Tablet Intuos 4
Other Interests
Knitting/Crochet, Polymer clay, 3D (Maya), Watercolour, Copics
Creators will point out if it is not allowed or have a fan-merch policy, but generally as long as they are not mass-produced and the art is not stolen, it is acceptable.
Here's the fan-merch policy for Undertale as an example : https://undertale.tumblr.com/post/139726155020/changing-policy-on-fan-merch
I try to follow the rules as best as I can