Luckily, more and more Electric Vehicles (EVs) support getting electricity out of the drive battery again. In future, this can be a key to use the energy stored in EVs during peak-usage (Vehicle-to-Grid). For the time being, I use it to have electricity when camping or during power outages to power my fridge.

For example, the Mitsubishi Outlander PHEV has a dedicated Schuko plug (rated at 1500 W -- by the way: it has no fuse: if you draw more amps, then simply the voltage goes down). Note that the Schuko plug exists only if the Outlander PHEV has not a heated windscreen as the same cabling is used for heated windscreen as for the plug, i.e. it is "either or" .

MG and Hyundai/Kia do this via the Type 2 charging connector (well, Hyundai/Kia do support also an internal Schuko plug, but the Icelandic Kia importer decided to offer/order only (at least for the EV6, not sure about other types of Kia EVs) configurations without that internal plug). For the Type 2-based approach, a proprietary Type 2 to Schuko adapter is needed that is pretty expensive if you buy the OEM version.

Luckily, some re-engineering has been done that shows that only cheap passive electronics is inside. But be aware that the adapters are slightly different for MG and Hyundai/Kia. And in addition to DIY solutions (concerning the resistor, I did some research: a 0.25 W resistor should be enough), third parties start to offer way cheaper adapters: both for the MG, and for the Hyundai/Kia -- these are UK quality, better than China quality that does not even have the button needed for Kia/Hyundai V2L adapter to start and stop V2L.