Stingby storage
Stingby storage refers to storing the attack of an Urban Stingby by unloading it while it is preparing to attack. This allows the attack to be reactivated from a greater distance by loading the Stingby back in, and when doing so, the Stingby will charge at the position Mario is in as it is reloaded. Using this technique, one can theoretically set up one or more Stingbies to bounce on for extra height or distance during a trickjump.
Uses
Speedrunning
Stingby storage can be used to skip the New Donk City Hall Interior section in nighttime Metro Kingdom, which is known as City Hall Skip. The trick saves time in Festival%, but it is unknown whether it saves time in categories such as Any%.
Minimum Mario
In Minimum Mario the Girder Sandwich moon can be collected in nighttime Metro Kingdom with a goomba using stingby storage. There are 2 jumps that require stingby storage. The first jump requiring a single stingby bounce and the second one[1] requires a double stingby bounce. As of now the second jump has only been done with TAS.
Theorized uses
Minimum Mario
In Minimum Mario, Stingby storage could potentially be used to obtain the Swaying in the Breeze moon as a goomba in nighttime Metro Kingdom. This would require 1 less moons to be collected as Mario to complete the kingdom.