Suggestions for default Item functions

[Hall of Famer]

Well for now I've planned five default item functions for Mys v1.3.0:

1. Key Items: They cannot be purchased, sold or tossed, such unique quality makes Key items ideal candidate to be integrated with explore/event system.
2. Level Items: The level items can raise your adoptables' levels by as many as you want. Level items are consumable items, and thus the quantity decreases by 1 each time they are used.
3. Click Items: The click items can raise your adoptable's total clicks by as many as you want, the adoptable will gain a new level if its number of clicks reach required minimum clicks for next level. Click items are consumable items too.
4. Breeding Items: The breeding items can eliminate breeding gauge for your adoptables, thus your adoptables will be readily available to breed again even if they have just bred a few secs ago. Breeding items are also consumable items.
5. Alts Items: The alts items can be used to switch between your adoptable's primary and alternate form. Apparently, such items are qualified as consumable items.

If you have suggestions for more possible default item functions, please post in this thread so I will notice. Thank you so much for your attention, hope you all enjoy the upcoming itemshop.