Here is my idea for today: a housing item that is a wisp generator.
When placed outside your house or castle, it generates those blue mana wisps. Or the red mana wisps, depending on which generator you purchase. Maybe the wisps don't literally come out of the generator, I don't know what is feasible programatically, but it would be great to have wisps floating around your castle!
Why? Because it breaks the purpose of hunting for whisps in common areas and walking.
It would be way to easy to restore health/mana.
If you want to get health and mana really fast at your house, play potion motion. Its not that much expansive in the crowns shop but it does the job.
But at the same time, I think having colorful things floating around your castle would be pretty nice. Maybe they could make some, but they dont do anything if you touch them. They are like decoration.
Actually this is kinda of a cool idea. I usually just buy potions but the cheapest way is the play potion motion. Level 3 will fill a bottle. Wisp generator in your house would be great I would like this item in my house if for not refilling potions i could use it just to have those whisp floating around for decoration.