I apologise since my question is not very specific.
I plan on running an eccentric cinderace with the moves
High jump kick
I want to give it an useful item but get rid of it before I use acrobatics. This is gen 8 OU singles.
The possibilities are:
If Cinderace has a berry or gem and the opponent uses Incinerate only then it will get rid of the berry or gem. Consuming an item is considered as getting rid of it such as a sash or grassy seed or a berry. Another chance of getting rid of it might be the opponent uses Thief or Covet while he/she has no held item or your opponent uses Knock Off then, your item will be gone or "get rid of it before I use Acrobatics." These are the possible ways to get rid of your Cinderace's useful item. Or Cinderace makes contact with a Pokemon with the ability Pickpocket and that Pokemon doesn't have any held item.
Hope it helps :).