POD Merch product research

I am looking for assistance with a product research project focusing on POD merch. The goal of the project is to find new products to sell, so I need market analysis research to investigate the current trends in this sector. In particular, I need to identify competitor analysis, to help develop a lasting position in the market. Through this, I will be able to identify the potential opportunities and challenges posed by the current trends, and make informed decisions about future strategies. The results of this research should provide me with an actionable report with useful insights, optimal strategies, and recommendations for pursuing them.

I need 30 products research to find the trending one.