Decidueye

A habitat matching this ambience raises Comfy Level faster. Time and weather gate whether a Pokémon turns up at a habitat at all — though light overrides the clock: a night Pokémon spawns at any hour if its habitat sits somewhere dark such as a cave or underground, and a day Pokémon spawns at night if its habitat is ringed with light.

Give or place anything matching these and both friendship and Comfy Level rise much faster — a matching item lays down with a bigger sparkle. For a Pokémon with the Trade specialty, matching items are also worth 50% more on the scale.

1 Lots of nature

28+ items

Berry caseStraw tableLog tableGarden tableBerry tableBerry chairLog chairGarden chairGarden benchLog BedStraw bedBerry bedWooden BedBerry basketTall potted plantFlat-leaf plantTwisted potted plantBerry clockVine wall decorationBerry wall decorationBerry table lampSeedot LampBerry hanging lampBerry print (wallpaper)Miracle SeedSilver PowderBig RootBerry print

2 Spooky stuff

16+ items

Armor fragmentLuxury chairPitcher-plant potTwisted potted plantMunna bankBoo-in-the-boxMalicious ArmorMysterious statueSlender candleEerie candleGravestoneMushroom streetlightChic streetlightSpell TagAdrenaline OrbCursola light

3 Wooden stuff

57+ items

Sturdy stickSmall logLumberStorage boxWall storage boxBig storage boxPlain chestOffice cabinetAntique chestPlain closetAntique closetLog tablePlain standFood counterPlain tableAntique tableStudy deskLog chairPlain stoolResort stoolStylish stoolWooden stoolPlain chairResort chairChic chairPlain sofaResort sofaChic sofaAntique sofaLog BedMini plain bedGuest-room bedWooden plateCD rackMagazine rackMini bookcaseBookcaseDining cabinetToy blocksWreathAntique clockSlideWater basinArrow signMenu boardSignWorn wooden crateWooden crateBarrelFrameCutting boardMushroom lampStone fragmentsStar closetMusic boxHarpStanding frame

4 Nice breezes

9+ items

FanAir conditionerPinwheelsTidal BellModel space shuttleCeiling fanWeather vaneLarge ventilation fanChimecho wind chime

5 Letters and words

43+ items

Office shelfLetterNotepadBookOpen BookPapersNewspaperMagazine rackMini bookcaseBookcaseTelevisionWall monitorScience experimentWhiteboardWall CalendarDecorative bookshelfHanging scrollGrubby letterGrubby notepadGrubby bookGrubby papersGrubby newspaperGravestoneArrow signMenu boardSignSignpostInformation boardRaichu signFrameWeakness PolicyMap and compassBook stackShop shelfParty ballHanging signStone signSlim information boardCycle shop signSupermarket signCafé signRestaurant signGift shop sign

Flavour: dry

8 foods

Chesto BerryWheatCave mushroomsCrushed-berry saladMushroom soupMushroom hamburger steakRoserade TeaSea grape smoothie

Two caveats. The game lists these five in a fixed order, but no source says the first counts for more than the fifth — the numbers are the in-game order, not a strength ranking. And the item lists are incomplete: Serebii marks them as still being filled in, so each count is a floor, not a total.