In our Diocese, and I think in most, the Rite of Acceptance is a beautiful and very moving ceremony–your presence at the ceremony and following reception will be plenty of support. I got a bit teary at mine, and also at several others more recently. I’m unaware of any significant gift-giving at the time of this Rite, in part perhaps because for many people there still is some uncertainty, and there may be family or friends in opposition.
At Confirmation, I love books, rosaries, pictures. Would you have concern about CDs or DVDs? I like them too. Many people have a small area in the home, usually around the Bible, for devotional objects that can be blessed and dedicated to the Trinity. Perhaps you might consider a more personal gift, like a visit to a local Catholic site–monastery, college, retreat center, basilica, that they might hesitate for a while to visit alone. Almost all gifts we’re aware of have been quite small in value.
Congratulations and blessings for your support. Sometimes discussions at RCIA generate interest in concepts or people that were previously not on the horizon, especially lives or activities of Saints or particular Church Groups or historic issues that make good gift topics.