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Here the 茶箱 is brought in on a flower-shaped tray called 花形峰（はながたぼん）. The 花形峰 was designed by Ennōsai (XIII), so I guess he made some adjustments to Gengensai's 点前. I think for this one, the 道具 are still wrapped in 仕覆（しふく）, but elements of spring and warmth are already visible.
The 道具 used here are festive and relate to the happiness of spring; so a shiny 鉄瓶（てつびん）, a lacquered 茶箱, a happy 茶碗. Blooming flowers are a good motive.