d12 faerie creatures based on fake etymologies

I really want faerie creatures living somewhat along side regular people, similar to how you see in the kids show Hilda for a bigger project I am working on (which is supposed to stay small, but I can't seem to help myself). Initially, it seemed to me that there were two ways to go about this, both of which I thought were dissatisfying

Pillaging the Hobbit for RPG ideas

After watching the Hobbit movies (which I knew were going to be bad, but still managed to disapoint me) I went back to reading the book. As a kid I loved reading it, especially the chapter 'riddles in the dark', but I never considered it from an RPG perspective before. During my last readthrough I noticed a lot of things I liked and that I think could work in RPGs as well, so here are some ideas pillaged from the Hobbit I will keep in mind in the future:

Adventure RPGs and Time

Obligatory philosophy tie-in:

Henri Bergson, the oft forgotten mega star of philosophy of the early 1900's, has a  very interesting conception of time. According to him, we have been falsely trained to understand time in spatial terms, i.e. as something you can measure and that is only ever different in degree (you can have more or less of it). Instead of thinking of time in terms of something that differs in degree, Bergson asks us to consider time as something that differs in kind: That time I was angry is followed by the time I regret getting angry, which is not different in degree (how long it takes) but different in how you experience that moment (the heated flush of anger compared with the ruminating grind of regret).

Very simply put: time feels different in different moments. The easiest way to see that there is merit to this idea is to compare time when you are bored, from time when you are distracted: the former crawls while the latter seems to fly.