Spiteful gifts for kids whose parents you want to troll

Question from a witch I saw online:

What do I buy for my rich nine-year-old nephew who has absolutely everything? Also, nothing we do is perfect enough for my brother's wife.

Some friends helpfully offered some thoughtful ideas for legitimately nice/cool presents, but I much preferred suggestions for the most annoying gifts for an annoying kid with annoying parents:

“A bag of candy that his mom doesn't let him eat?”

“A donation to some cause they probably hate in your nephew's name”

“A harmonica.”

“Whoopie cushion”

“A box of Whoopie cushions.”

“A sound effects toy”

“I always do a gift card to a local indie bookstore. FUUUUUCKKK YOOOOOUUUU!”

So I asked for more ideas on Twitter. Here are a sampling. Please use this information wisely. With great power comes great responsibility.