Handy (adjective)

1. Convenient to handle or use; easy to use.
2. Close at hand; easily accessible.
3. Skilled with one's hands; adept.
4. Being of help or use.
5. Being easy to carry or transport.

Origin:

Middle english handi, from old english handig; akin to old high german handag handy.

Examples:

1. A handy tool for the job.
2. It's handy to have a map.
3. He was handy with a wrench.
4. The extra blanket came in handy.
5. The handy size of the book makes it easy to carry.