Campus errands are mainly extended to help take-out, as well as agent express delivery. Detailed operational procedures can be formulated for these two processes in the project.
Idle trading is similar to supermarket shopping, but the buyer corresponds to the seller, and there is no middleman, which is a positive solution and is also worth developing among college students. Because graduates need to sell a lot of things when they move out of the school dormitory every year.
These two projects are relatively easy to innovate. Of course, there are many other projects, which are relatively low in cost and won't cause too much trouble.