we have the same prob kaz, boo's non stop energy
i found now if i give her the vacuum she will happily vacuum the house for me or, i give her the mop she loves moping.
i give her a wee pile of washing to fold, just anyting, she just loves helping and its great to make a game out of it. she also enjoys trying to clean my bathrrom and help with washing/ dishes.
did you try a different playcentre kaz?
i found stokes valley pc was lovely, maybe a bit of a drive (well not to much) but could be good for her, and you met a few of the mums at my farewell so they wont be total strangers.
have you also tried baking with rhi?? boo likes to cut the shapes when we make bikkies, im thinking of trying a few other quick and easy recipes to try out with her to see how she goes, there are a few she can make with you just watching, and teachign them to bake is a good life skill aswell
oh yes wiggles are my saviour to

and mickey mouse oh and now big big world, she watches far to much tele though so can sing most songs from nickjr and playhouse off by heart