Lose my balance easily and people have difficulty hearing my verbage
Speech therapy to work on volume (i.e. LSVT-Loud or Parkinson's Voice Project) and physical therapy to work on strength and balance. Yoga and tai chi can also help with balance.
Read books aloud. A humorous anecdote in an autobiography is well received. You can find books that may be appreciated by both the PD-er and the caregiver.