Here ill tell u how 2 get heaps of stones and other stuff without having the hassle of finding the right wondermail code for it

possible places: midnight forest or mystifying forest

wat u need:
1. Trawl orb (a thrawl orb draws all items on the floor to the user)
2. enougth space in ur treasure bag/storage

wat to do

1. go to mystifying forest or midnight forest and find a kecleon shop
2. find the stairs but do not go 2 the next lv
3. stand as close to the stairs as close as possible
4. use the trawl orb
5. quickly pick up any stones u see on the ground before the kecleon comes
6. then go up the stairs to the next lv
7. look in ur treasure bag and they will be there

tip: the further away the stairs are the more chance u get to pick up the stones
note: after u go to the next floor dont worry about the kecleon because it will not be able 2 get u when u go 2 the next lv

u can use this cheat in pokemon mystery dungeon blue/ red rescue team aswell as pokemon mystery dungeon explorers of sky

if u want other stuff like gold ribben go to other dungeons.