The items you can receive from Loner Crate are:-
1 x Spectral Crate Key
1 x Elytra
1 x Trident 

1 x Dragon Head
1 x Totem of Undying 
1 x 200 Claimblocks 
1 x Get Crafty Box
1 x Slime Spawn Egg
1 x Good Luck Box
1 x Squid Spawn Egg 
1 x Redstone Kit 
1 x Glow Squid Spawn Egg 
1 x Ominous Bottle {Bad Omen V} 
1 x Smithing Template {Netherite Upgrade} 
1 x /fly 1 day Potion {Drink this to get 1 day of /fly power}
1 x /dback 3 days Potion {Grants 3 days of /dback ability.}
1 x Store Discount 5% {Get a discount on any store purchase (contact staff to claim).
8 x Shulker Shells 
16 x Gold Blocks
16 x Golden Apples 
16 x Netherite Scraps 
16 x Invisible Item Frame 
32 x Iron Blocks 
32 x Golden Carrot
32 x Bottle o' Enchanting
64 x Diamonds