Magical Objects - Storage receptacles

Moody's Magical Trunk

Alastor Moody owns an especially bewitched magical trunk. It has seven locks on it, and the trunk opens to a different assortment of objects for each lock. Most notably, though, the seventh compartment is about 10 feet (3.0 m) deep (possibly because of the use of an Undetectable Extension Charm), and is where Barty Crouch Jr. imprisoned the real Moody. Other compartments contain spellbooks, Dark Detectors, and Moody's Invisibility Cloak.
Pensieve

A Pensieve is a stone receptacle in which to store memories. Covered in mystic runes, it contains memories that take physical form as a type of matter that is described as neither liquid nor gas. A witch or wizard can extract their own memories or another person’s, store them in the Pensieve, and review them later. It also relieves the mind when it becomes cluttered with information. Anyone can examine the memories in the Pensieve, which also allows viewers to fully immerse themselves in the memories stored within, much like a magical form of real world virtual reality.

Users of these devices view the memories from a third-person-point-of-view, providing a near-omniscient perspective of the events preserved. This, of course, raises questions of how they are able to see things beyond what they have remembered. Rowling answered this question in an interview, confirming that memories in the pensieve allow one to view details of things that happened even if they did not notice or remember them, and stated that "that's the magic of the Pensieve, what brings it alive".[17] The "memories" contained in the Pensieve have the appearance of silver threads. Memories that have been heavily manipulated or tampered with to alter perspectives, or are simply aged and gone-spoiled (such as Horace Slughorn's), may appear thick and jelly-like and offer obscured viewing. Memories are not limited to just those of humans, since at least one house-elf (Hokey) provided Dumbledore with a memory as well.

Dumbledore's Pensieve first appears in Goblet of Fire, again in Order of the Phoenix, and plays a pivotal role in Half-Blood Prince. It makes a last appearance in Deathly Hallows when Harry uses it to decipher Snape's memories.

Hermione's small beaded handbag
Hermione used an Undetectable Extension Charm on her handbag which contains almost everything they need when they disapparate from Bill and Fleur's wedding reception. It contained jeans, sweatshirts, socks, the Invisibility Cloak, Polyjuice Potion, books, a tent, essence of dittany (a liquid extract that can be used to heal wounds quickly) and even Phineas Nigellus Black's portrait, along with other various items.