I guess you could say I'm OCD about my tree...
I have two sets of ornaments and they get switched off. Last year we went back to the "old" set... it's more country christmas like... crotchet snowflakes, red gingham ribbon, rusted ornaments, wood snowman... etc. Then Jake had his own 4ft tree, with neon colored, no breakable ornaments and he was able to play with that to his heart content.
Then the other set is purple/copper/platinum color... lots of "bling", big poofy flowers... that set is fairly new... probably only 3 years old or so... I got sick of the country look one year and decided to shake things up.