Been too long since I have seen these contraptions. I like the background, but maybe have it a little farther back or a different light source to avoid the direct shadows. Will be interesting to see how many different dispensers you come up with.
Tigger looks like a dear in the headlights. I hear an "oh dear" somewhere in the background. The focus is great, but the direct flash is a little harsh. Having the light come from the side would have done two things, given more interesting shadows it their faces, and eliminated the strong shadow on the background. A way that I have done that in the past is setting the camera up on a tripod, killing all the light in the room, setting a long shutter speed, and then using a flash light to light the subject any where I want it lit. Its hit or miss for the exposure, but since they aren't going anywhere it should not be a big worry. Hope that helps.