Short term

There are many short courses that you can do along with B.Com. You can do certification courses in IT. You can also do part-time Diploma courses during the weekend. There are many short courses available like Diploma in financial management, Diploma in banking.
I would suggest the below options:
1. NCFM certifications for Stock Market
2. Tally software course
3. Good computer skills course, which includes typing and MS Office
4. A Foreign language can be opted.
5. Advanced Diploma in Financial Accounting & Taxation
6. Certificate in Accounting Technicians (CAT)
7. Diploma in Accounting & Auditing
8. Diploma in Banking & Insurance Management
9. Diploma In Stock Analysis and Trading (DSAT)
10. Diploma in GST Rules & Procedures

I am giving you name of short term job oriented course after completing B.Com below :
Diploma in banking and insurance
Diploma in financial management
Diploma in retail management
Diploma in risk management
Short term courses of NSDLand CDSL
Course on capital market
English speaking course
NIIT course
Tally
DCA
Data entry jobs
Footwear designing course
Fashion designing
Other courses
CA course
ICWA course
M.Com
MBA course
MBA options:
MBA in HR
MBA in General Management
MBA in Marketing
MBA in Risk Management
MBA in Operational Management
Degree Programs:
Master in Retail Management
Master in Management Studies (MMS)
Executive MBA
Executive Education Programme in Operations Management
Executive Program in Applied Finance