Have a look at the Ninja post of Shuriken and Metsubushi:
shirotoratiger.proboards.com/index.cgi?board=ninjustu&action=display&thread=961
When doing our weapon work, closing and opening the gap between ranges, where could you use a throwing blade or where could you use a cap of blinding powder in the drill or sequence?
We've been working on hitting the glove to defang and will include this over the next few sessions - but also consider the use of shuriken and metsubishi
Could they be use to stall an attacker so you can draw your sword?
Could you attack his eyes at outrange to directly obscure his vision or indirectly so his distraction gives you an opening?
In PIA - Proggressive Indirect Attack - hide the progression with a distraction, attack indirectly
