We're still relatively new in our celebrations of the Liturgical Year, but we are learning and growing each year. This year we decorated our "Jesse Tree Year Round" with tongues of flame inscribed with the Seven Gifts of the Holy Spirit and doves. I printed everything out on card stock and the kids and I had fun cutting everything out and discussing why we were using these elements for our tree. I got the idea from the Windsock for Pentecost at Shower of Roses and adapted it to make it work for us.
As an aside, if you'd like to work more with your kids (and perhaps yourself!) on memorizing things like the Seven Gifts of the Holy Spirit, I highly recommend Kevin Vost's book Memorize the Faith. The memory techniques presented in this book are fantastic and work well with kids and adults.
For dessert - because after all, celebrating the liturgical year with food is such a highlight for everyone! - we had pound cake, whipped cream, and strawberries cut length-wise to look like flames. The kids The kids thought it was great and were quite impressed that strawberries could be made to look like flames. We also had some raspberry rooibos tea with our dessert because it was as close as I could get to an appropriately colored beverage on short notice.