I couldn't spell (or speak) as a young child. My spelling is much better on a keyboard than on pen and paper, because all I do is remember each pattern for each word. I am more likely to do a typo by accidently using the wrong pattern than hitting a wrong key (although that happens too). I find it easier to spell when using pen + paper by thinking of a keyboard and remembering the pattern. When typing a new word I am very slow, but once I have remembered it, that's it, for ever. I suppose I also remember pre/postfixes, like es, ing, ed, 's, n't, re, un, in, to etc...
I'm not sure I have any 'special abilities', but I do certainly have a musical memory. I can mostly recall any track I've listened to.
My pet hobby is learning new programming languages.