Justaway
Justaway (ジャスタウェイ, Jasutau~ei) is a merchandise-line of dull looking figurines created by Banzou. In truth these small toys are actually destructive bombs that Banzou sells to the Jouishishi without attracting the attention of the Shinsengumi as they only appear to be harmless toys. Its explosive power and usability can be compared to that of a hand grenade, and it is a recurring item in Gintama used by many principal characters. They appear to be based off grenades from Laputa: Castle in the Sky.
A Justaway Wind chime.
It made its first appearance in Episode 32, as Yamazaki, a spy working for the Shinsengumi, was in incognito and inspecting a factory producing these Justaways. At first, he highly questioned the purpose of these red, cylindrical figures, but later came to realize they were actually small bombs, which the plant Boss was planning to use to overthrow the Bakufu.
Since their first appearance Justaways have made numerous cameo appearances in Gintama including as keychains, wind chimes, on mayonnaise bottles, on mens' briefs, on snack packaging, and even ranked 22nd place on the 2nd Popularity Polls, surpassing Sarutobi Ayame, much to her dismay.
Justtank
The Justtank, equipped with the Neo Armstrong Cyclone Jet Armstrong Cannon in Episode 57.
The Justtank was created by the Evil Organization in order to take over Edo. It was powered by 24 stolen Soopah-Powah Batteries, one battery alone can power a single spaceship but 24 made the Justtank quite powerful as the batteries were used to power the Justtank's most fearsome weapon, the legendary Neo Armstrong Cyclone Jet Armstrong Cannon.
Justaway Stew
Justaway Stew
Justaway found in food, here in a pot of stew.
Justaway Bread
Shinpachi has a bag of bread during Benizakura Arc
Justaway found in bread bought from bakeries.
Justaway Alarm Clock
Justaway alarm clock
Justaway as an animated alarm clock.In Episode 171 Gintoki's alarm clock.