your parish probably has a ministry of visiting the sick, bringing communion to the sick, bereavement ministry etc. You need to get involved in your parish community life and ministries, find out what is going on, where the need is, what needs are not being met, how can you work with exisiting organizations and ministries in the diocese to fill this need in your parish. What has to happen in your parish to make it happen. No, you are not qualified to be a hospital chaplain, only a priest can be a chaplain. Whatever ministry to take part in, it should be something in line with your interests, qualifications, where your heart is.
CCD, religious education for children, youth and adults
RCIA catechist or sponsor
St. Vincent De Paul
Social concerns committee
Visiting the Sick
Family Life committee
PTSO at the parish school
Youth Group mentor or leader
Any activity your kids are involved in, take a leadership role (combine quality time with kids and ministry)
K of C (invitation only? make it known you would welcome an invitation)
Men’s Club/Holy Name society
legion of Mary
Take any lay Ministry courses offered by your diocese
Find out what paid jobs are usually staffed by deacons in your diocese, what the salary level is (can you live on it), and which jobs currently held by lay people that they would prefer to have taken by deacons, you are not limited to work in your own parish.
When you find the type of position congenial to you, aim your preparation for that job as well. For instance deacons here have been liaison between St. Vincent and local food bank, running diocesan office on Immigration Affairs, Catholic Charities, Marriage Encounter, Marriage Preparation, Family Life office, NFP, and some chancery jobs.