2 Timothy 2 What can I do for the Lord?

20A large house contains not only vessels of gold and silver, but also of wood and clay. Some indeed are for honorable use, but others are for common use. 21So if anyone cleanses himself of what is unfit, he will be a vessel for honor: sanctified, useful to the Master, and prepared for every good work.

Vessels in Pauls day were used for many purposes. They didn't have plumbing as we have, so vessels were used.
Isn't it interesting you are considered a vessel of honor? When we come to Christ Jesus, He cleanses us, we become sanctified.
Sanctified: set apart as or declare holy; consecrate.
You were set apart as or declared holy, useful to the Master (Jesus) and prepared for every good work.

You may ask, what can I do for the Lord?
Start with reading your bible and understanding the scriptures.
Take a Spiritual Gifts assessment here:
http://gifts.churchgrowth.org/cgi-cg/gifts.cgi?intro=1
Pray and ask God to use you, then listen to your heart and follow His prompting.
It may or may not be in an area of your spiritual gifts (strengths) remembering He uses the weak to confound the wise.
1 Corinthians 1:27 Berean Literal Bible
But God has chosen the foolish things of the world that He might shame the wise; and God has chosen the weak things of the world that He might shame the strong;

Blessings, David