We need simple videos made with a camera on tripod - simple videos.
A person falling down in three different scenarios. On stairs, off a chair, standing to the floor.
Water spreading on a surface - four different surfaces.
Two people standing in a queue, a third person joins, one person leaves. Two angles.
A person walking through a doorway. Three different doorways. Two angels.
A person climbing through a window. Three different windows. Two angles.
Shot from above in a retail store. A person enters the scene, picks something up, puts it down, leaves. Three versions, three objects picked up.
Three different people, videos of their face. Smile, frown, look angry, look sad.
Three videos of three people lighting cigarettes and smoking.
Three videos in different scenes. Two people. One person punches the other person on the arm, slaps them on the face, grabs them from behind.