We already have あやめ・あさがお and some buds, so I'm sure there's some space for うめ・さくら and other flowers like tsubaki, wisteria, chrysanthemum etc. which are typical in Japan and even more western flowers like tulip, rose and the like.
Today I'd like to contribute 「もみじ カオ」to bring some autumn colours to the site。
With just green leaves it'd also pass for a more summerly 「かえで カオ」。And of course the japanese maple tree needs its brothers たけ and まつ.
For health improvement, we need more fruits like strawberry, raspberry, blackberry, banana, pineapple, kiwi etc. and veggies like cucumber, daikon, eggplant, potato and so on.
I put 「さくらんぼ カオ」on the table.
Since we already have a moon and a sun, we definitely need 「ほし かお」.
Did you ever think of adding more planets so that Jupiter doesn't feel so lonely around here?
Btw, was it intentional that #53 and #93 are both called 「おにぎり カオ」, whereas #94 and #95 have an additional number tag?