if your desire is for a few items.. you can get item codes by viewing the "source" of the wiki article for the item in question...
i.e.
http://lorebook.lotro.com/index.php?title=Item:%2B1_Hope_Token_%2815_min%29& action=edit
results in
Code:
<noedit>
<seo title="Item DB: - Items - +1 Hope Token (15 min)" metak="lotro, Lord of the Rings Online, wiki, database, Lorebook, LOTR, Middle-earth, Tolkien, Item DB: , Items , +1 Hope Token (15 min),Potion" metad="+1 Hope Token (15 min): In the darkest of times, even the faintest glimmer of hope can make all the difference." />
<official type="game">
<item id="1879212006" name="+1 Hope Token (15 min)" />
</official>
[[Category:Potion|+1 Hope Token (15 min)]]
</noedit>
the id="........." portion is what you want.
In the past it was much easier as the JSON response of the search form returned them all en mass.