Hand-knit Blankets
It takes at least two years to knit a blanket. I only know how to knit square scrubbers, so I knit a ton of those, and join them together.
I knit blankets for both of my parents.
Colorful ones.
Here is a closeup of the stitch. It's pretty dense, so the blanket is warm.
This one has slub and mohair mixed in.
I even knitted in the character for "long life." As you can see, this involved some meticulous patchwork.
I don't have the kind of free time I had as a teenager anymore, so it would take far more than two years, but I still knit sometimes.