The Digivices from Season 1 become difference colours when the kids Crests are activated otherwise it is the normal Greyish colour. In order the digivices are: Tai - Orange, Matt - Blue, Sora -Red, Izzy - Purple, Mimi - Green, Black/Dark Grey - Joe, Yellow - TK, Pink - Kari. The Digivice gets the kids to the Digital Wolrd thru a data stream thing. It also channels the kids power to make a digimon evolve from In Training to Champion. The kids can also trace each others signals and sense if their digi is in trouble.

Digitama/Digiegg are what Digimon are born from and revert back to on deletion cept during Tamers when they absorb the data.

Devimon uses these to control Digimon and to split file island up. He uses them to soup up Leomon's power as well as his own.

Matt plays this harmonica at different times in Season 1 and it reflects his sorrow.

Izzy looks up Digimon on this as well as write various code, connect to Genni, see where Digimon attack Earth, pretty much anything

Tai uses his pocket scope to view most of File Island (not to mention Tokyo Tower)

The Crests slot in these Tags. The Crests are the DD's personal traits/that come from others around them. They allow Digivolution to Ultimate (Warp digivolve for Tai + Matt's digis)