This thread made me laugh. Both of my DD's love small things, ages 4.5 and 2. DD4.5 is more obsessive about collecting and playing with small random toys which almost always end up in bed with her. Anything from picture frames, beads, small plastic ponies, etc. She is very strong-willed and a perfectionist as well.

DD2 is more into the little pieces of lint on the carpet -- she's done that since infancy.