Thirty thousand yuan can be invested in some small projects, such as the following:

1. Life services: tea shop, breakfast cart, fruit stand, etc.

2. Production and processing: personalized customization of mobile phone case and mobile phone holster, color printing of characters, which can be completed with a 6090uv printer.

3. Online store sales category: Taobao, Tmall and other platforms build websites and sell some handicrafts and small gifts.

4. Financial investment: financial projects such as stocks and funds.

It should be noted that investment should start from the fields that you are good at and don't enter unfamiliar industries.