Oh I was doing some wiki walking to discover what some heroes had been up to since last I saw them, and I was reminded of a device that would shore up the capabilities of the inertia belts Paul has made standard issue for the team- Skyrocket of Power Company's
Argo Harness- an energy storage and conversion device.
While the inertia belts are top tier against kinetic threats, which I'd say are the majority of attacks even in a comic book based universe such as this, the argo harness allows for the harmless absorption of energy based attacks, and the energy thereof could even be channeled into more useful forms of energy, like say converting it into kinetic energy for an inertia belt to channel into a forcefield, or into a nice refreshing charge of solar energy for Superboy.
Or if you're facing someone who isn't immune to their own form of energy, give them a taste of their own medicine by shooting it right back at them.
Presuming anyone from Power Company is included in this version of Earth-16 of course.
Another interesting little gadget from Power Company is
Sapphire's serpent's egg- an alien artifact that basically seems to be the scientific version of the witchblade. At least partially powered by telekinesis it's capable of forming protective armor, shapeshifting into various things like weapons and whatnot, flying, and forcefield generation. Kryptonian powers are merely telekinesis adjacent here, Megan might get some utility out of it but it seems largely redundant with her natural abilities, although some serpent egg armors might make nice birthday presents for Manchester Black or Ace if Grayven is feeling generous.