Perfect rhymes:
* Tuna
* Coonah (an archaic word for a raccoon)
* Shoo-in-a (a slang term for something that is certain to happen)
Near rhymes:
* Boomerang
* Hurricane
* Serenade
* Cigarette
* Planet
* Granite
You can also use slant rhymes (also called half rhymes) where the words share some similar vowel sounds, such as:
* Dune
* Moon
* Spoon
* June
The best rhyming word for you will depend on the context of your writing.