You may probably be lacking enough money to start in a project of your choice, or are short of time to manage them. But you can still make profits from your income.
First, approach your banker and see if they have a fixed deposits account that would help you invest your savings in a short time. You may be able to accrue an interest from this after a period of six months to one year or so.
Secondly, talk to traders that may need a little capital boost and agree on an interest. These would then supply you with products or services you need, for instance, a grocery store.
Also, look at the most prevalent needs of most of your workmates need but who in most cases face money shortages to do the purchases. For example, airtime, clothing and so on. You may stock airtime and any other in demand product with a little profit every end of the month.
You may also buy items for resell at a tidy profit. These may include phones, electronic appliances among others.
How about helping your neighbours to purchase merchandise like groceries? You may buy your items alongside theirs at a discount and sell the same to them at a profit.
In the main, look at these and more ideas to help you invest your money on the short term. But remember that everything around you presents an investment opportunity.