I had this problem too with my female (which is two years old now ) she would not play with anything until recently. One day we were at the petstore and it dawn'ed on me that Candee is small so maybe I should try little stuff.
Your not going to believe this but I bought her cat toys and she LOVES them

She will not part with her little soft crinkly ball

And she loves feathers and all other fluffy or crinckly stuff (things cats play with), very weird.. I'v always said she looks like a cat
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Candee, Bear, Daizy (in spirit, R.I.P) and Pepsi's mommy