What is your budget? I have been in the same situation with my family room HT system. Luckily my kid's have moved past the Barney and The Wiggles phase to High School Musical and Ice Age (at least Ice Age is relatively humorous). I ended up with a pair of Polk Audio RTi25s for $140 shipped. When the center channel I used (supposedly voice matched to the 25s) was driving me crazy, I ended up buying another pair of RTi25s for $100 shipped and used one as the center. The Polks are pretty amazing for speakers in the $100-$150 range. I use a small subwoofer with them but if you can't, the RTi35s should be available for $200-$250. The Wharfedale Evo 8s or 10s are also very good small speakers available for $200-$300 used.
This is mainly a theater system but I do listen to 2 channel music a couple of times each week on it and I can't imagine being able to find better $100 speakers.
This is mainly a theater system but I do listen to 2 channel music a couple of times each week on it and I can't imagine being able to find better $100 speakers.