Might you consider becoming a volunteer? Here are some possibilities:
Docents for guided tours. Training provided. Primary requirements are a friendly disposition, an interest in history and culture, and interacting with the public. Three and Four hour time slots.
Historical Research based on needs of ongoing projects. Archives organization, exhibit research, detective work. Oversight provided. Flexible hours.
Administrative Help with mailings, data entry, office tasks. Flexible hours and time commitment.