You can also just unequip the gun before firing, but that breaks immersion. If I recall correctly, the XM16 and AK47 became essentially unusable because a soft press aims and hard press fires. But on the Vita the gun always instantly fires if you try to aim it.
Houseplants. I feel like they are slowly disappearing. My grandma has plants in nearly every window, but us younger folk would rather have a Displate with a picture if a plant instead if an actual plant.