My Sennie likes drinking straw toys. There's a video on here somewhere. I bought a pack of drinking straws, ran them throw a pencil sharpener, to make them spirally, then I use a clear zip to bunch about 10 together. She adores it... other than that, she likes wood toys, toys with paper, basically anything she can preen or shred. Her new favorite is to attack the newspaper at the bottom of her cage, so I've begun to tear some newspaper into pieces and just put that on top of the newspaper I actually want to use as liner.
here's a link to the straw idea...
[ame=http://www.youtube.com/watch?v=sD1zRedZ0fs]How to make spiral straws..... - YouTube[/ame]