As per your requirement I am here providing you ideas for Small Business with low investment.

Small Business with low investment:

Personal Services
Financial Advisor
Organizer
Personal concierge
Personal shopper
Child-care
Elder Care
Remodeling contractor
Tutoring service
Wedding consultant

Product Sales
Cart/kiosk
Swap meet sales
Direct sales
eBay
Gift basket

Creative Ideas
Arts & crafts business
Creativity consultant
Interior designer
Jewelry
Freelancing your expertise
Hobby business
Sports business

B-to-B Businesses Ideas:
Manufacturer's rep
Medical claims
Security specialist
Seminar production
Bookkeeping
Business support
Consulting
Desktop publishing
Transcription service
Virtual assistant business