The options for die-cut shapes are endless and they are used not only in scrapbooking but card making and other papercrafts.
When it comes to scrapbooking, die cuts can be very, very, broadly classified into stand-alone die cuts, themed die cuts and layering die cuts. And these can either be manual die cutting tools or machines OR electric die cut machines.
Die cut machines are a bit pricier but many serious scrappers or craft artists would prefer it.
Stand-alone die-cut embellishments are the most common cut-out to purchase from a shop. They can be used as-is and don't require you to glue pieces on top of each other to complete them.
They can be self-adhesive or non-adhesive and come in a massive variety of shapes and sizes. These can include words such as "love" that can be used as your scrapbooking page title, geometric shapes such as rectangles for picture frames, or even a graphic such as a butterfly or diamond shape.
Stand-alone die cuts often come in a pack with a theme, so a floral-themed pack would include a few different flower shapes and a birthday theme pack may include some words and birthday-shaped imagery such as balloons.
Below is a chalkboard-themed set of die cut stickers that I purchased from my local two-dollar store. These will be great for the first day of school or graduation-themed scrapbook layout!