I'd honestly start differentiating between the two just to head off any shitty gifting. I'm at the age where we only do nice dinners and giftcards, but it's gotta suck to open an especially well-intentioned gift where some relative has put together what they think is a highly coveted children's toy and now you have to decide how to tell them you have absolutely no clue wtf and why tf, and try not to squash their feelings while telling them they basically went into a lot of trouble to gift you some meaningless plastic junk.
It's pretty easy to do too, just frame the questions as if you've no clue what's going on. "Why does cousin wear that around her neck? Is it new, does it mean anything?". "Why does she keep talking about playdates? She asked if I'd like to have a playdate, what should I expect at such things?". You can even segue it into your own thoughtful gift, "she keeps talking about trains, I'm thinking of buying her a set, is she collecting anything in particular? I'm so lost, this is so different from anything else I've ever done."
And if someone makes a comment linking the two of you, time to point out differences -- "What are you talking about? I just wear pink dresses, I don't do toys", "I do tea parties with grownups, I've no idea what people do on toy playdates", "I collect dresses, not trains", and "this is a $300 dress with glitter jacquard fabric, custom tulle lace and organza overlay, I just spent an hour doing my makeup and another hour putting my hair up in braids so I can pin a $300 custom ship-shaped hat onto it. Do I look like I'm going to sit on the floor and play with plastic trains", etc etc.
Actually now that I think about it, it's useful to have someone like this in the family to play off. At least it's easier to drop hints that your stuff is this and not that.