Here are the significant things I found in The Last Continent in alphabetical order. This is the same list in chronological order.
Apple Glazier – Dessert created in the Bugarup Opera House by Imposo in honor of Dame Margyreen Glazier.
Bonza Charlie’s Beaut Sieve – Created in Fourecks. See Maxwell’s Impressive Separator.
Dangerous Mammals, Reptiles, Amphibians, Birds, Fish, Jellyfish, Insects, Spiders, Crustaceans, Grasses, Trees, Mosses, and Lichens of Terror Incognita – Volume 29c, Part 3, was discovered by Death.
Drop-bear – Found in Fourecks. Drops out of trees onto its intended prey.
Dwarf bread – Ironcrust’s best – “T’ Bread Wi’ T’ Edge”.
Funnelweb – One type (brand?) of beer in Fourecks.
Graphical Device – Invented by student wizard “Rubber” Houser to write multiple lines (up to 256) at once. Popular until it propelled him backwards out a fourth floor window.
Hex – Partly magical computer located in the High Energy Magic Building of Unseen University.
How to Dynamically Manage People for Dynamic Results in a Caring Empowering Way in Quite a Short Time Dynamically – If it ever fully comes into being, Archchancellor Ridcully will find it a favorite.
Iconograph – Twoflower the Tourists is the first one known to bring one to Ankh-Morpork. You’d call it a camera, but I bet your camera doesn’t have an artistic imp inside. At least, I’m pretty sure it doesn’t.
Lancre Blue Vein – Presumably cheese. Reacts vigorously with acid.
Lives of Very Dull People – Written by Wasport. Includes Sir Roderick Purdeigh, as well as information on the islands of Slakki and Purdee.
Maxwell’s Impressive Separator – Spell that used nano-demons to unmix two things. Similar to Bonza Charlie’s Beaut Sieve.
Mr Pootle – Apparently a (possibly) stuffed animal or similar toy owned by Archchancellor Ridcully when he was a young lad.
Old Tom – The bell in the UU clock tower that tolls in silence.
Omega Conspiracy, The – New title of the Principles of Thaumic Propagation.
Orange Ormulu – Dessert created in the Bugarup Opera House by Charley’s father in honor of Dame Janeen Ormulu.
Peach Nellie – Dessert created in the Bugarup Opera House by Rincewind (no, really!) in honor of Dame Nellie Butt.
Principles of Thaumic Propagation – Owned by the Lecturer in Recent Runes. On Mono Island it changed into The Omega Conspiracy.
Pyramid Strangler Vine – Preys on other more stupid plants.
Roo Beer – Made at a brewery in Bugarup that was inherited by Neilette.
Rusted Dunny Valley Semillons – Semillons are grapes. Dunny can have more than one meaning. Let’s hope the bar patron in Bugarup meant the better one.
Sapu Tree – Found on Sumtri Island. Not nice to people.
Sledgehammer Plant – Found in Bhangbhangduc. Takes the occasional unobservant human victim.
Small Boring Group of Faint Stars – In The Last Continent, used to determine the wizards had gone back in time.
Snakes of All Nations – Written by Wrencher. Informs that Fourecks has few snakes because they were eaten by the spiders.
Squid – (Or fquid, if you’re a crocodile.) Unit of currency in Fourecks.
Strawberry Sackville – Dessert created in the Bugarup Opera House by Nunco in honor of Dame Wendy Sackville.
Thaumodalite – Unknown whether this is an object or a substance. Ponder owns it/some. Perhaps related to a thaumometer.
Thaumometer – Measures the density of a magical field.
Two Up – Flip 2 coins and bet on whether they will come down or not. Seems common in Fourecks.
Weezencake’s Unreliable Algorithm – Used to assemble “new” books in L-space. It’s complicated.