[avidiax]

I have a small AA-powered "atomic" clock (radio controlled clock) that I got in college (~20 years ago).

I moved from the US to Europe, and kept several large kitchen appliances by buying a really solid transformer (AcuPwr). I kept a rice cooker, expensive coffee grinder, a Blendtec blender, a sous-vide stick, a vacuum sealer, a stand mixer, and a few more things. Replacing all of those in here would have cost much much more than the transformer.

Many other modern electronic devices are 120-240V compatible, sometimes even those that claim otherwise (e.g. LG OLED TVs).

In your case, your TV and toaster are probably not worth bringing. The SNES you can probably just find a different AC adaptor for, but it is also probably PAL, not NTSC; not sure that matters anymore.

If it is important to keep certain things, you can try Quick220, which lets you make a 240V outlet from 2 120V US circuits (split-phase), or you can do the same from a dryer or electic stove outlet.