If I had only $20 a month to spend on marketing, I would invest it in a paid subscription to ChatGPT. This tool can help you craft blog posts, social media content, email campaigns, video scripts, and PowerPoint presentations. It can assist with search engine optimization, brainstorming ideas, and conducting market research. While it may not create flawless content every time, it will enable you to produce marketing content and campaigns quickly and efficiently. Plus, it can generate basic graphics. With ChatGPT's assistance, you can maximize your marketing efforts, making it the best $20 you can spend each month.