IPod touch apps - Here is a link to a google doc I got at a TCEA workshop last year that has a ton of apps for the IPod. I bet they have the same apps for the IPad.
There a ton of IPad apps for Kindergarten but I think before you download them, think of what are you going to use the apps for--small groups or whole group. Going through the apps can be very overwhelming but keep in mind how you guys are going to use it for to get its full potential--keep in mind it is just a tool, look at your content first.
I use the Educreations app all the time. It's an interactive whiteboard that also enables you to pre-record a lesson that the students can follow autonomously. Even better, the app is free!