Eloquent collections methods

The Eloquent ORM provides a beautiful, simple ActiveRecord implementation for working with your database.
The results of Eloquent queries are always returned as Collection instances and Eloquent has a list of methods to work with Collections.

Here it is an interesting article about 10 less-known Eloquent collections methods:
avg()
chunk()
contains()
every()
filter()
forget()
implode()
keyBy()
map()
plunk()