Well, I've made another major step United Church of Christ-ward by joining Grace Reformed Church, UCC, Washington this morning. I have the certificate of membership and box of offering envelopes to prove it.
The service, after the announcements, had the construction of a confirmation which the Reformed churches historically retained. (No kneeling, though.) I made a number of promises, including financial support to the church (hence the envelopes) and a endeavoring to bring new members. (Polity congregationalists would have noted there was no "congregational affirmation" in the service, which was appropriate given my membership was approved by the elders in Consistory and not by a all-congregation action like a vote in a general membership meeting, as you find in some Baptist settings.)