Examples of spontaneous combustion

Amanda has burned many objects in her room, including a poster...

...a stuffed bear...

...her curtains...

...and a globe.
(Slow Burn, Part 2)

Amanda has caused Twinkles, a dog, to fry.
(Boom)

...as well as a tree to explode, leaving nothing but charred branches.
(Boom)

Amanda causes a police car to explode.
(Boom)

Amanda burns her room.
(Slow Burn, Part 3)

As she becomes distressed, Amanda begins to set fire to her room...

...and her house.
(Amanda's Journey, Part 1)

Amanda's fires start again as she becomes distressed...

...she sets fire to Peter, but he saves himself by running super fast.
(Amanda's Journey, Part 1)

When Amanda misses a bus, her anger ignites the bus stop bench...

...and later, she attempts to stops some robbers by igniting their truck tires...

...but the fire gets out of hand quickly, but Tracy intervenes to help.
(Amanda's Journey, Part 2)

Amanda loses control of her emotions again.
(Slow Burn, Part 5)

Amanda uses her ability on a sack of flour.
(Yang & Yang)

Amanda closes her eyes to concentrate...

...and causes a bucket of dolls...

...to catch fire.
(Slow Burn, Part 7)

Amanda uses her ability to kill Caleb.
(Slow Burn, Part 9)

Amanda parlays her ability into creating pillars of fire for a carnival show.
(Slow Burn, Part 10)

Amanda practices her ability, creating a large flame...

...which slowly fizzles out.
(Close to You)