https://www.amazon.com/Effect-Tactical-Morale-Patch-Miltacusa/dp/B074FK4PYT/ref=asc_df_B074FK4PYT/?tag=hyprod-20&linkCode=df0&hvadid=216514968137&hvpos=&hvnetw=g&hvrand=7130678464586698939&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9008704&hvtargid=pla-351019189815&psc=1
This one might be a bit large.
The following may be a better size:
https://patchcollection.com/products/official-mass-effect-n7-logo-embroidered-iron-on-patch