This category is for technology used by Power Rangers that cannot be considered part of their arsenals.
Billy created this machine so that one person could read another's mind. However, Squatt sabotaged the machine the previous night, switching two wires on the machine's power source. When Billy and Kimberly test it, they end up switching brains instead of reading each other's minds. For a whole day they are forced to see life from each other's point of view. Bulk and Skull (who had been eavesdropping) sneak into Billy's garage lab and use the machine, causing them to switch minds as well. Eventually, Billy fixes the machine and switches everyone back.
The machine has two spaces for people to stand, and the two people involved must join hands for it to work. One of them can only fit Kimberly, as shown by the fact that Skull had trouble standing in it. This suggests that Billy might have made the space specifically for her.
When Jason needed to enter the Dark Dimension to try to keep the Green Candle from burning and draining Tommy's powers, Billy made the molecular decoders to pick up the energy left behind when Goldar had teleported Tommy and some Putties from the park to the Dark Dimension. The two devices were set up in the park and activated, and a portal opened up between them.
When Pirantishead froze most of the Dinozords and turned the Tyrannosaurus zord against the Rangers, Billy made a device to block the monster's signal and regain control of the zords. It did not seem to work at first, because Billy had put a battery in backwards, but once he fixed this, it worked perfectly.
Billy and Zack made this device to keep the Saliguana monster from using its fire breath by cooling it off. It didn't work at first, but when they added an extra chip that Trini had brought, the device was strengthened and pushed back the fire easily.
The polarizing gauge, or simply "polarizer", was a science project of Billy's intended to collect data on a rare solar storm. Naturally, Zedd turned it into a monster, which was destroyed by the Thunder Megazord.
Billy created this device to block the "Zedd waves" produced by Beamcaster. When the Rangers end up under the influence of the "Zedd waves" and unable to fight, Aisha manages to fix the device and free them.
Billy made a device that was supposed to return the time-regressed Rangers to their normal ages. It needed the six Power Coins to work. Billy tested it on himself and was restored, but Zedd turned the regenerator device into a monster before Billy could restore the rest of the team.
Molecular Hydro-Atmospheric Generator
Hyper-Ionization Beam and Crystal Transformer
When Hydro Hog turned bodies of water into clouds, Billy made the Hyper-Ionization Beam to get the clouds to rain. Later, he used the Crystal Transformer with the collected shards of the Zeo Crystal to reverse Master Vile's time-regression.
Green Energy Transducer
Alpha 5 made this device to get back some energy from the Stag Beetle monster after it had drained all of Tommy's Green Ranger powers. Because of this device, Tommy was able to get some temporary power back.
The Turbo Rangers and Alpha 6 made a magnet device to pull Divatox's Space Base toward them. They needed to get the Phantom Ranger's ruby back from her to save his life. Unfortunately, Divatox sent a monster called Crosspatch, who destroyed it.