Board Thread:Skyrim/@comment-11549959-20130802145657/@comment-6881629-20130802153431

You can give them clothes some food items like an apple or Sweet Roll a few books (there are four childrens books i know of) Dolls and as you know daggers or Wooden Swords. All as Nait said from General Goods Merchants (like all items they appear at random though). The girls Grey and Yellow look the best out of the dresses if you really want to spoil them as they have a little more detail to them than all the others.

Don't forget you can play tag or hide-and-seek too.