A six letter word for a six legged creature, seems fitting. It's a very broad classification of type of animal, but a lot of people fear them. Many of them either fly or crawl, some can do both. Also, they bite.

I have been burning for billions of years, yet nobody calls me a fire hazard.

Where dust and dog-eared secrets lie, a quiet keeper up high. Wood or metal, it's no elf, holds the tales on itself.

I am useful until I hit the floor, then I’m everyone’s problem.

There was once an old movie about a brave little version of me. For anyone born after 1990, I'm what cooks toast with your coffee.