Moving toy for 7 week old?

[Gingernut81]

DD has the fisher price peek a boo rainforest mobile on her cot next to her changing mat.(www.argos.co.uk/m/static/Product/partNumber/3486511.htm)
She absolutely loves it and I just wondered if anyone knew of any playmat/activity gyms which have moving parts like this?
We already has a basic play mat but she's no where near as interested in it.
TIA