Odo's bucket

From Memory Alpha, the free Star Trek reference.

Odo's bucket was an object that Odo used to store himself when he had to revert to his natural, gelatinous state to regenerate. He generally stored it in the back corner of his security office but would take it with him on trips off the station expected to take longer than 16 hours (the length of time he could remain in solid form).

Quark once suggested that Odo could use a latinum plated bucket to sleep in. (DS9: "Q-Less")

Nog once played a joke on Jake by filling Odo's bucket with oatmeal from the replicator and dumping it on Jake, leading him to believe that it was Odo he spilled. (DS9: "The Storyteller")

On a trip to the Gamma Quadrant in 2370, Odo brought his bucket with him. (DS9: "Shadowplay")

Odo took the bucket with him on a trip aboard the USS Defiant to the Gamma Quadrant to meet the mysterious Dominion. He had to share quarters with Quark and made the Ferengi look away when he melted into the bucket. (DS9: "The Search, Part I")

Once he moved into his own quarters sometime in early 2371, Odo kept the bucket with him "as a reminder of how [he] used to be." He put a houseplant that Major Kira Nerys brought him as a housewarming gift and decoration into the bucket. (DS9: "The Abandoned")

When he believed he was about to die on a cold mountainous planet in 2373, recorded a log in which he stated his wish to be cremated and his ashes placed in his bucket, which he then asked to be shot through the wormhole. (DS9: "The Ascent")

Odo gave Kira his bucket just before he left DS9 to rejoin the Great Link after the end of the Dominion War. (DS9: "What You Leave Behind")