This tip is from a friend at the Frazee Dream Center. She often prepares meals for at least 90 kids and volunteers in the program. She is full of great ideas, and this one is so obvious, yet not something I've ever thought of.
Next time want to cut spaghetti into small pieces for your little ones, put your kitchen shears right in the bowl (or in Ms. Jenny's case, kid scissors in the large pot) and have at it! This is so much easier than using a knife, potato masher, pastry blender OR a wooden implement. And, yes, I have tried all three. Another benefit is that your 4-year old can even cut his noodles by himself, assuming he has the scissor thing down!