I think the 'part halfling part pixie' thing is dumb, personally. They're fey house spirits, they don't need to be part X or part Y, they're just, fey. You could look at the more Scottish Gaelic variants of the name to change it (IE: brùnaidh), but if I was going to base it off anything I'd be looking at the faerie race as a starting point, or a pixie race to be Tiny..
So going on from there, I'd look at what people have done for pixies and start there as a starting point as they'd be the most common thing for 'Tiny playable race', remove flying, replace with stuff for being sneaky/hard to find per their mythology