Any fun ideas for a mf102 mf107 mg1 and prodigy?

i am a day away from receiving my freqbox to compliment my mg1, prodigy and ringmod. i was wondering what neat things folks have done with these components. i am very interested in knowing if i can, without a cp251, make the 107 act as a 3rd osc for either the mg1 or prodigy (early version without cv inputs) any helpful ideas would be appreciated!