Tags: Use of relevant tags is important from the SEO perspective. It helps the search engine track your post based on the tags you use.
E-commerce bloggers can gradually choose to write curated content from other websites/blogs. That always helps because a buyer will generally not spend much time surfing. He/she will appreciate it if you provide most of what they are looking for.
DIY videos: For DIY blogs, apart from the text based posts, videos are a better way to send out the message to your followers as it improves the understanding real time.