Jim has stuff from Karkat too. His 4D chess game, his modelling software etc. He has one of Green Arrow's bows, given to him by Green Arrow while visiting Tess. He has a Kryptonite tie pin from Tess (but no volcano lair yet, girl, he's still salty about that), and his personality written as music from the hands of a Bright Shiner. Also, an artistically carved dildo courtesy of X, though that's probably only canon non-compliant due to who gave it to him. Also, kitten stickers. :D

I feel like I'm forgetting stuff. People have given Jim lots of cool things, which he is surprised but very pleased about! He thinks more people should give him stuff, he likes it. I think he's a toddler to whom who adults keep passing shiny toys to keep him occupied, but don't tell him I said that.