Here are the items that are used in the story by the DigiDestined and the villians. Note that the children's digivices are the D-Powers from series 3. The reason for using them is it's my favourite digivice, although they don't have all the same functions that the ones from series 3 had.
WARNING: SOME THINGS BELOW MAY CONTAIN SPOILERS LATER IN THE STORY.

Digivices

The original DigiDestined still own their original digivices and D3's, although they have been upgrades over the years. The original digivices can now open portals, not just the D3's.

The D-Powers are the childrens digivices. They recieved their digivices on their fifth birthdays along with their Digimon partners. The D-Powers have more functions than the original digivices. They store the "Digital Ring" inside and can release it when summoned by the DigiDestined. There are built in microphones just below the screen so the children can communicate with each other. Other functions include a sensor to locate other DigiDestined, a Digital scanner that scans Digimon's data and a digital clock.

Digital Rings

The Digital Rings are small golden rings that are stored in the childrens digivices after being created. By saying "Digital Ring Release" the ring is released from the D-Power and allows the Digimon to digivolve to their champion forms.

Meddallions

These are small round metal circles, shaped like coins with the eight crests engraved on them. They work similar to the crests as they allow the Digimon to digivolve into their ultimate forms. There are eight based off the original crests.

D-Phone

Created by Izzy, the D-Phones are small devices/phones that the original DigiDestined use to communicate with each other. They are colour cordinated for each DigiDestined matching their crest colours. The D-Phones have a small clip so it can be used hands free.

Port Stone

The Port Stone is a large energy jewel that is the key and power sorce to all the Digi Ports all over their world. It is located in an heavily guarding building in a deserted place in the Digital World called area 66. Only Gennai and his selected few can access it whenever needed. If the Port Stone is removed from its slot then all the Digi Ports will close instantly and not re-open until it is returned to its rightful place.

The Eight Digital Emeralds

These emeralds protect each sector of the Digital World. Created when the original eight DigiDestined gave up their crests when they were kids, they are hidden away keeping the lands of the Digital World safe and sercure.

The Emeralds powers can be used for good and evil but when used for evil it disturbs the Digital World's balance and disasters begin to occur. They each have their own special powers which can be used by good or evil, some emeralds share the same power. Listed below is where the Emeralds were found and what powers they posses:

Courage - (telepathic/mega digivolve) Found on a small ledge in a fire infested larva pit guarded by SkullSatamon

Love - (power increase) Buried deep in the sand in the middle of the hottest desert.

Knowledge - (power increase) Hidden in the warehouse in the middle of the File City.

Friendship - (mega digivolve) Located in an Ice Palace guarded by IceDevimon.

Light - (opens portals) Buried at the top of Infinity Mountain

Sincerity - (Invincibility) Located in the depths of the forest.

Reliability - (power increase) Found at the bottom of the ocean.

Hope - (telekinetic) Hidden in a stone layered with ice and snow.