Lights. By default the Nihola has little metal tabs on the top of the wheel wells which are suitable for mounting bike lights that conform to what appears to be an obsolete standard. In other words, there are tabs for which you will have a hard time finding lights. There is also the possibility of putting lights on the baggage rack (if installed), on the seat post, or the handlebar (although the handlebar would be hidden behind the rain cover, when installed.)
The tab mounts above the wheel wells are located below the top of the cargo box, so lights on those mounts are not visible from the opposite side of the trike.
The Nihola store sells little lights for the wheel-well-tabs in white and red, powered by 2x AAA's, and a person would have two of each, ideally. I have two types of these lights, one is bright and focused while the other is more of a marker light, presumably with improved battery life as required by a Danish law from 2012. (Both may have had the Abus brand but I've never seen them for sale online.) I think its a real shame lights fitting those mounts are hard to find, because I also have 3 or so plastic mounts for that standard which can be placed anywhere on a bike, and I have maybe 9 lights that fit all these, so I can easily move them around between bikes and locations as batteries weaken. Yay for standardization.
|A brighter, more focused red with a dimmer, unfocused white.|
|A fork-crown light mounted on a Nihola.|
So thats the story of lighting for Nihola.
On our two (soon to be three) regular "Danish-style" commuter bikes, we have a Dynanmo hub and various Reelight models. No battery lights. Add full fenders, hub gears and robust tires, and we're ready to go day or night without screwing around.