Low-intensity indoor lighting could probably work.
I see the major problem in people being me and giving the plant water with the same regularity as rain the sahara, which means I can actually kill my desk lamp by not caring enough.
On the other hand, I've heavily abused my current desk lamp and it works.
It's great in terms of theoretical research but I think it might be a bit of stretch to think it could really replace a 2$ metal arm with a off-the-shelf LED strapped to it.