Not a trick question, but a real puzzler - which spacecraft or spacecrafts incorporated real wood structural elements?
I think that Soyuz launcher uses wooden parts in engine ignition process (proof link in Russian: https://geektimes.ru/post/273782/)
A wooden Space Shuttle?
Before the Space Shuttle ever flew, a lot of testing had to be done. Among the test items were the OV-101 (Enterprise), STA-099 (later OV-099, Challenger) and the Pathfinder (later OV-098, no STA designation known). The latter was partly built of wood.
The Enterprise was built without engines or functional heat shield. Also a lot of other systems were missing. It was intended as a flight test article first, but was planned to be upgraded to full orbiter status after conclusion of testing, becoming the second orbiter after OV-102 Columbia. Design changes during the construction of Columbia forced NASA to reconsider this. After the Challenger disaster, refitting Enterprise was again brought up but ultimately decided against.
Like the Enterprise, Challenger was first built for testing. It was a full airframe with a mockup crew module and partial heat shielding. It was put to the test for 11 months. After that it was fitted with a functional crew module, parts were reworked and was launched on orbital missions as OV-099.
Space Shuttle Pathfinder (retroactively/honorarily assigned number OV-098) was another full sized orbiter test article, but built out of steel and wood. It was mainly used for testing all shuttle ground facilities: cranes, roadways and other heavy equipment. It completed 6 missions, but zero of those actually went into space. It was later refurbished into a fully equipped model using a test tank (MPTA-ET) and two prototype Advanced Solid Rocket Booster casings.
In the mid 1970's China had a series of reconnaissance satellites called Fanhui Shi Weixing (FSW). These were designed pretty early on. They were recoverable and mostly used for mapping and internal geography of China. They were recoverable because at first they had film cameras like early American spy satellites. These had a heat shield make of white oak. It apparently worked well since there were quite a few, (20 something?) missions. Later on they tried to evolve them into manned spacecraft. In the west it was believed they had a failure causing the loss of the astronaut, so that program was discontinued. I believe FSW (with improvements) were used again for reconnaissance. Later they got people up in the Shenzhou program.
WISA Woodsat is made of regular plywood; dried in a thermal chamber but otherwise the same as you'd buy in a hardware store:
WISA Woodsat is a 10x10x10 cm ‘CubeSat’ – a type of nanosatellite built up from standardised boxes – but with surface panels made from plywood. Woodsat’s only non-wooden external parts are corner aluminium rails used for its deployment into space plus a metal selfie stick. [...]
“The base material for plywood is birch, and we’re using basically just the same as you’d find in a hardware store or to make furniture,” explains Woodsat chief engineer and Arctic Astronatics co-founder Samuli Nyman.
“The main difference is that ordinary plywood is too humid for space uses, so we place our wood in a thermal vacuum chamber to dry it out. Then we also perform atomic layer deposition, adding a very thin aluminium oxide layer – typically used to encapsulate electronics. This should minimise any unwanted vapours from the wood, known as ‘outgassing’ in the space field, while also protecting against the erosive effects of atomic oxygen. We’ll also be testing other varnishes and lacquers on some sections of the wood.”
From this press release
The FSW did have an oaken heatshield. I saw one on display at the bicentennial airshow (Richmond, Sydney, 1988). This craft was launched on 1987 August 5, and was previously known in the west as China 20, then variously called FSW 0-9 or FSW 0-10, depending on whose chronology you refer to. Cospar 1987 067A, NORAD 18306. The oak was charred, and some broke off when display attendants moved the spacecraft. They simply vacuumed most of it up so that the charcoal didn't mess the carpet! I was able to photograph both the exterior and interior (equipment had been removed).
As for structural elements, at the 1972 Farnborough airshow there was the backup Prospero spacecraft (1971 093A). The solar panels were hinged to provide access to the interior electronics and the wooden frame. I asked the engineer about this, asserting that this was a low fidelity mockup. No, he assured me, it was the real backup, and yes Prospero did have a wooden frame! I believed him, but even today I have the niggling suspicion that maybe I was having my leg pulled!! Prospero was built at the Royal Aircraft Establishment in Farnborough, and this engineer was one of those that built it. I understand that this flight spare has been donated to the Science Museum in London. Perhaps some museum visitor / staff could ask the curators abouth this?