Maybe keep a look out for the type of dreamsign you have in your dreams instead of individual dreamsigns. If you don't have Exploring the World of Lucid Dreaming, in it LaBerge lists 4 main categories of dreamsign with subcategories:

INNER AWARENESS
Thoughts
Emotions
Sensations
Perceptions

ACTION
Ego(you) action
Character action
Object action

FORM
Ego form
Character form
Setting form
Object form

CONTEXT
Ego role
Character role
Character place
Object place
Setting place
Setting time
Situation

I guess the dreamsigns you mentioned mainly come under ACTION so pay attention to what you, people and things do. Hope this helps.