Common:
* Beautiful
* Careful
* Cheerful
* Doubtful
* Faithful
* Fearful
* Frightful
* Graceful
* Helpful
* Hopeful
* Joyful
* Meaningful
* Painful
* Powerful
* Thankful
* Thoughtful
* Wonderful
Less Common:
* Bountiful
* Colourful
* Dutiful
* Eventful
* Fruitful
* Gratefu
* Hateful
* Lawful
* Loveful
* Meaningful
* Painful
* Peaceful
* Playful
* Restful
* Shameful
* Skillful
* Sorrowful
* Successful
* Trustful
* Useful
* Wrathful
Figurative:
* Handful
* Mouthful
* Spoonful
This list gives you a variety of examples, but it's only a small sample of the many words ending in "-ful".