Answer:
Other terms for this handy device include doohicky, doo-dad, and whatchyamacallit.
Often wandering the streets, this group of people cannot afford to be choosers.
MT_TF_S What are the missing letters? Why?
I am the first you ever saw, what greets you every morning and what goes out in the end.
What is so delicate that even mentioning it breaks it?
I'm a soft, sweet food made from a mixture of flour, shortening, eggs, sugar, and other ingredients, baked and often decorated.