surname Gu
ancient / old / paleo-

= + : Mnemonic symbol: at least on German maps, this character actually resembles a cloister.

Oh no! Gitta Giraffe (gu) found that the golden cross (十) broke off of the cloister (古) in the space station's living room (Ø3)! She skewers a mandarin (口) on top of the cloister so that she can skewer the broken off cross back on to fix it.

古 character breakdown

ten / 10

= + : Mnemonic symbol: a holy cross. Sherlock Holmes (sh-) is investigating a very strange thing he found in the kitchen of the space station (-2): A big pyramid made of ten (十) crosses (十), which are in turn made out of flutes (一) and dinosaur bones (丨).
mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls

Mnemonic symbol: 口 shall be represented by a mandarin. Karl Marx (k-) is enjoying a mandarin in the outhouse's living room (ou3).

Characters with 古 as component

to buy / to sell
abbr. for Tianjin 天津 (also 津沽)
(archaic) sentence-final particle expressing a doubting attitude
to reside / to be (in a certain position) / to store up / to be at a standstill / residence / house / restaurant / classifier for bedrooms

= + : Mnemonic symbol: 寄居蟹, ji4ju1xie4, a hermite crab.

A ghost is haunting Zeus and the hermite crab in front of the space station. While the hermite crab is able to retreat into the cloister it uses as shell, Zeus can only float away in horror.
surname Ju
stem / foot / base / root

= + + : Dorothy Gale (di) bought a cloister (古) and wants to set it up in the space station's bathroom (Ø4). The package contained a vase (立), a stem (啇) and a manual showing how to combine the two items to get the cloister (a map 冂 in a metaphorical sense), but Dorothy has no idea how to set up her cloister.
celestial blessing
(onom.) for the sound of a bird, an empty stomach etc
skeleton
to implicate / net for birds or fish

Words with 古

throughout time / from ancient times (up to the present)
medieval / Middle Ages / Chinese middle antiquity, 3rd to 9th centuries, including Sui and Tang Dynasties / Middle (of a language, e.g. Middle English) / used / second-hand
Sino-Cuban / China-Cuba
the distant past / ancient times / antiquity / early historical times
the men of today are sadly degenerated (idiom)
variant of 一股腦兒|一股脑儿[yi1 gu3 nao3 r5]
unchanging since times immemorial (idiom) / unalterable / unvarying / monotonous
unprecedented / never seen since ancient times
from ancient times up to now / throughout history

Sentences with 古

古 currently does not appear in any sentence.