You will need to install a user script manager extension to install this script.
Basically, if you have one of these IOTM in your Inventory, this script will check when you last used them and display that information on the Main page, right after you log in.
It also adds a link to use the items from there.
If you click the name of the IOTM you'll be taken to the wiki page.
Any questions can be posted here: http://th.blandsauce.com/wiki/User_talk:Patojonas