I'd like to see new ways to use items that our sims did collect or harvest. The crystal creation was brilliant because it also made it more meaningful to go hunting crystals and metals. The flower arranging was good for flowers that we grow or find in the wild - would love additional usage of flowers though, like attaching one flower to your sim's hair, or to decorate your bicycle etc. Or even a way to make a collage by snapping misc flowers of our choice to some deco object being a wall thing or a vase. I have a CC vase that allows me to add 2 or 3 single flowers for a smaller breakfast table decor, where flower arrangement gets a bit too massive. I'd also like that such flowers go bad after a while, it feels a tad weird inheriting your greatgranny's fresh rose...
For edibles - how about a new bowl that a sim can add edible fruits to? The bowl can be placed on a table as a nice treat for anyone being just a little hungry. Could be handy with toddlers in the house, or how about a bowl of apples in the sable to give your horse the occasional treat. It would be a nice way to make good (and visible) use of what you harvest. Fruit should go bad after a generous amount of time, like a week or so. I assume this fruit bowl could be integrated with the cooking options, based on fruits already in the fridge, or we could drag-n-drop from sim's inventory/fridge.