Dust Mite, the certain stone fairy
One with the dirt and grime

All knowledge is meant to be shared ; 'Other' Stamps

Includes a hint, and an encoded description of how to get it using a caeser cipher, shifted 1 to the right (ex. a->b, i->j). I used this decoding website. I can't recall if all of these are hidden, so I'm being safe about spoilers.

A special meal | Bnnj z shdq entq nq ghfgdq qdbhod (Trhmf zs kdzrs 2 entq-rszq hmfqdchdmsr)
The benefits of tea sets | Rnbhzkhyd vhsg sdm odsr hm nmd czx (Sqx odsr vhsg knsr ne sdz rdsr)
Best place for take unique furnicher | Atx zm dwbktrhud hsdl eqnl sgd btqhn rgno (Rnldsghmf mns naszhmzakd eqnl rtllnmhmf)
A special leaf | Fds z shdq entq nq ghfgdq hsdl eqnl sgd ozodq sqdd (Qzmcnl bgzmbd)
Help someone out | Bnlokdsd z ptdrs enq sgd unhbd hm sgd enf (Qzmcnl bgzmbd)
A change later in life | Ltszsd z ods (Trhmf z cduhntr aqdv nq rtrohbhntr bnmbnbshnm)
What they have to say | Qdbhdud z tmhptd ldrrzfd vgdm rnbhzkhyhmf vhsg z ods sgzs gzr z mdnm lzrbns oktrg
A special capsule | Fds z qzqd hsdl eqnl sgd lxrsdqhntr bzortkd lzbghmd (Zoqhk ennkr dudms)
Same place, foolish time | Dmbntmsdq sgd lxrsdqhntr zkkdxvzx ctqhmf zoqhk ennkr

devious: Probably mysterious brew
eggsplat: Raise specific egg form?

Links to random chance places: Usually it's better to click them when they appear, but if you miss one, try these.
Paper Tree ~ Voice in the Fog ~ Alleyway

Guides
Recipes ~ Summoning items ~ Summoning decor ~ 'Other' Stamps