Perfect rhymes:
* bonga (a type of African drum)
* songa (a type of South African music)
* wonga (slang for money)
Near rhymes:
* longa (a type of sausage)
* finga (slang for finger)
* fronga (a type of frog)
Eye rhymes:
* manga (a type of comic book)
* panga (a type of machete)
* tonga (a type of boat)
Other options:
* gonga (a type of bell)
* chongga (a type of Chinese musical instrument)
The best rhyming word will depend on the context of your sentence!