Ya sure buddy I will help you here to suggest you some good idea to start a small business for college students.

Here I various small business you can pursue
Transportation service

Tutoring service

Career counseling

Sports training service

Party promotion

On-boarding services for international students

Graphics arts design services

Freelance writing services

Dog walking services

Hair styling service

Babysitting

Event planning

Residential and Commercial Cleaning

Fitness Trainer

Pet Grooming

Photography and Videography

Master of Ceremonies (MC)

Food Delivery

Sewing

Dance and Music Classes

Gardening

Start Selling E-books

Start Building Mobile Applications

Start Blogging

Consider Affiliate Marketing

Freelance Writing

Offer Virtual Assistance Services

Start a Resume Writing Service:

Offer Bookkeeping Services

Engage in Website Design and Flipping

Do Search Engine Optimization Jobs

Provide Language Translation and Transcription Services

Start Organizing Webinars:

Become an Online Nutritionist:

Become a Ticketing Agent:

Become an Online Tutor

Become a Graphic designer

Start a Property Finding Service

Establish Online Directories:

Engage in Online Surveys:

Online Reputation Management (ORM):