Hopefully these scenarios are common, and therefore easy to resolve...

I have a photo shelf in my lounge that I was thinking of trying to light up of an evening using some kind of HomeKit-enabled lighting - but not sure what kind of light. Being that it's high up, it'd be better if the lights were battery operated so as not to have a big wire trailing down, but it's not the end of the world if that's not possible, as I'm sure I could hide the wire behind a nearby tall plant.

The shelf I have is a simple one from IKEA (here), and I was thinking of either putting something along the front of the shelf, behind the lip, or in between the 3 photos I have on there.

The other scenario is the aforementioned tall plant. I was also looking for an option of something that can be placed in the plant pot, firing upwards, to light the plant. Wired is less of a problem here, as I have an outlet right next to it.

Again, plant is an artificial IKEA one (here).

Any thoughts/suggestions for what's out there (I'm in the UK)?

Thanks in advance!