So, i found out that you can "cheat" in items by using the host commands for multiplayer. It was kind of difficult to find out but i did it and i know every ID about the game's items... Here they are.
Give 0 1 = Plank
Give 1 1 = Raw Potato
Give 2 1 = Cooking Stand - Food
Give 3 1 = Hook
Give 4 1 = Empty Tincan
Give 5 1 = SaltWater Tincan
Give 6 1 = Water Tincan
Give 7 1 = None
Give 8 1 = Scrap
Give 9 1 = Cooked Poato
Give 10 1 = Build Hammer
Give 11 1 = Cooking Stand - Purifier
Give 12 1 = Fishing Rod
Give 13 1 = Mackerel Raw
Give 14 1 = Mackerel Cooked
Give 15 1 = Thatch (leaves)
Give 16 1 = Rope
Give 17 1 = Crafting Table (Doesn't Exist)
Give 18 1 = Crop Plot
Give 19 1 = Spear
Give 20 1 = Axe
Give 21 1 = Net
Give 22 1 = Palm Seed
Give 23 1 = Crop plot - Tree
Give 24 1 = Barrel (Nothing)
Give 25 1 = Drop Item (Nothing)
Give 26 1 = Coconut
Give 27 1 = Sharkmeat Uncooked
Give 28 1 = Sharkmean Cooked
Give 29 1 = Small Chest
Give 30 1 = Chest (Doesn't Exist)
Give 31 1 = Big Chest (Doesn't Exist)