You can use items to Spellstrike as long as their activation action is "Cast a Spell". Feats like Striker's Scroll and Fused Staff primarily avoid you needing the Scroll/Staff in hand.
The issue here is that the Tengu Feather Fan's activation action is "Interact".
You can use items to Spellstrike as long as their activation action is "Cast a Spell". Feats like Striker's Scroll and Fused Staff primarily avoid you needing the Scroll/Staff in hand.
The issue here is that the Tengu Feather Fan's activation action is "Interact".