The Switch Joy-Con AA battery pack. Since the Wii also used AA batteries, this should give the Joy-Cons that same satisfying weight.
I don’t mean to burst any bubble, but when TPHD came out on the Wii U, that’s essentially what they did with the Wolf Link Amiibo. There’s an entire dungeon locked behind the Amiibo that was freely available in the original game. Of course, I don’t discourage you from getting an Amiibo card instead of the actual figure
LED Game Sword Grip for The Legend of Zelda: Skyward Sword HD, MENEEA Adventure Games Accessories for Nintendo Switch Joy-Con Controller, with Adjustable Elastic Wrist Strap, ONLY for Right Joy-Con https://www.amazon.com/dp/B0972KBFC3/ref=cm_sw_r_cp_api_glt_fabc_QBMCSXZX65NE99N3RAQ1