The appeal of a sex toy based on a real person(they do exist irl btw) is the thought of fucking that person, it's not because their genitals are like somehow Godly, so the only way you would be asked about letting them make one(or a few) of you, is if it's very late-game, where just plain general questing has at that point given you galaxy-wide renown.
I saw one person say "let Anno do it", but I'm not sure what that meant? let Anno make a toy, and then use the toy on Syri? that would most certainly be up Syri's alley.(and it'd be very interesting telling Anno about it, or having her watch it get used by Syri) I'm hoping some more stuff will be explored with Anno/Syri-cest, because Syri plainly is into the idea of doing stuff TO her twin(in addition to with), and while Anno's feelings on the matter aren't clear atm, she's also very sexually adventurous, and she doesn't really take having Syri cum on her face particularly
badly.
One up on this, Cousin bought it (not) knowing it
Hahaha, that'd certainly be interesting.... I mean again, the creation of one would be very weird to set up, but the thought of Cousin having/using one is very nice(more so imo if they know it's you), especially if you find out about it.