Needful Things was a shop that sold cursed items to unsuspecting customers. The merchandise was sold by informing the buyer of its "positive" effects, never mentioning the ironic curse attached to the object. Mr. Needful never asked for money in return for the items, saying that customers "never pay here... not with money" (implying that the curses are the customers' form of payment).
The shop was successful until Rick, annoyed that Mr. Needful attempted to curse him and secretly jealous of Mr. Needful and Summer's grandfather/granddaughter relationship, decided to ruin Mr. Needful's business. Rick opened Curse Purge Plus! to remove the curses from the items while keeping their benefits using science and technology. Because Needful Things did not charge for its items, the inventory was soon cleared out and the curses removed, driving the shop to bankruptcy. After extensive work and modernizing by Mr. Needful and Summer, Needful Things became n33dful.com.
Some items that the shop sold included:
- Aftershave that would grant the user female attention, in return for impotence. (Rick cured the negative aspect easily with a serum.)
- A golden microscope that reveals secrets beyond comprehension by making the user mentally retarded. (Rick removed the retarded aspect, then using it to create a curse identifying device.)
- A pair of running shoes that make the wearer the fastest in the world, but wearing them results in running nonstop until death. (Rick removed the negative aspect of the shoes.)
- A lifelike doll that threatens the owner. (Modified by Rick to do taxes.)
- A typewriter that writes best-selling murder mysteries, but eventually makes the murders happen in real life.
- A fox Boa that kills and skins the user.
- Beauty cream that makes the wearer beautiful in exchange for their eyesight.
- Boxing gloves that will make the user a boxing champion in 1936, trapping them in the same match for eternity.
- Needful Things is a reference to the Stephen King book by the same name, about a shop owned by the devil.
- Several n33dful.com products can be seen in the Rickstaverse game. Including a tablet, mobile video game, and a hoverboard. This means Mr. Needful's business has become very successful.
- The upcoming Justice League film features this episode on the TV screen inside of Barry Allen's lair during the scene where Bruce Wayne recruits him.