There are a lot of Dummy 13 accessories, but Lucky 13 uses a different grip than the rest of the series and Lucky 13's hands use the ball as opposed to the socket, so I made this alternate hand that can hold Dummy 13 accessories. 

Models used in photos:
Crossbow by @user_3143458084: https://makerworld.com/en/models/648406 

Flame Katana by @Torgmir: https://makerworld.com/en/models/804730

Scythe by @user_2130188078: https://makerworld.com/en/models/431768