Tangled yarn is the raw material here. Thread Fever lays out knots of colored thread that you pull apart and send to the box of the same color, and every thread you gather helps fill in a picture on a canvas.
Mostly planning. Threads overlap and cross each other, so the order you pick them in matters. Look at which strands lie on top and which boxes are waiting before touching anything.
The publisher mentions hundreds of levels, and the finished canvas designs give a sense of progress from one stage to the next. The mood is relaxed, with vivid colors throughout.
Boosters exist for exactly those moments. Save them for stages that have truly stalled rather than spending them the first time the board looks crowded. Another tidy, slow-thinking puzzle is 1010 Deluxe.