Option 1: Wait until they got implemented.
Option 2: Create own PickUp-System. For example create Objects and use ColShape. (OnPlayerEnterColshape)
Option 3: I think you can create them clientside. But the page in the wiki is incomplete.
That´s what i found in Discord. Maybe it helps: (Javascript)
Pickup CREATE_PICKUP(Hash pickupHash, float posX, float posY, float posZ, int p4, int value, BOOL p6, Hash modelHash)