so im pretty new and my sibling just joined today, I was wondering if there was a way I could trade them some traps, potions, gear and the like? all I can seem to do is list it on the broker :(

You can see if an item is untradable by looking at the info box- under the name+amount owned line on the right it will say either "tradeable" or "not tradeable"
certain items are untradeable and cannot be traded or sold (all traps except master traps, and all potions/elixirs/draughts are untradable)

Tradable items, when selected, will highlight this button down at the bottom of the inventory: the little envelope with an arrow on
Click this to bring up a popup.
In the popup window you can input a player's username (not the ID number like private pet sales use), or select from the friends dropdown.
CoD is not relevant for gifts, items can be sent with no payment requirement

The recipient can then go to their player trades and accept once it is sent


(likewise using this method you could have them send you a low value item with a CoD if you wanted to give them gold)

(with healing items, they'd either have to buy their own from the shops, or get some mission pets and start doing missions to get some from the mission satchel rewards)

oh okay, gotcha thank you so much for your help! i always forget about those teeny tiny little icons haha! much appreciated :)