Step 1: The Mystery Pink Egg
The pink egg is perhaps the most famous egg of them all, as it is the only one to actually alter a level to make a home for itself, it is also featured in a painting in Banjo-Tooie behind Blackeye The Pirate.
To find the egg, go to Treasure Trove Cove, go into the sandcastle (To the right of the entrance of the level and drain the water by talking to Leaky. Beat Grunty's word challenge if you have not already, then leave the sandcastle and go back in, after you do this enter the word CHEAT in the letters on the floor, you will hear a MOO sound after each letter, then enter the sequence OUTOFTHESEAITRISESTOREVEALMORESECRETPRIZES, you will then be treated to a cutscene of the risen sharkfood island. Enter the risen sharkfood island through the hole in its side (watch out for snacker) you will hear a sort of fanfare when you enter, this will play every time you enter sharkfood island, then use the shock jump pad (useless if you haven't learned it from bottles yet, which makes no sense as you learn it in treasure trove cove) then you will bounce up and land in a little alcove in the rock, there are 16 of these going in a spiral up the column in the center, you will need to flutter-jump from one to the other until you reach the top (this is by far the trickiest item to obtain) then pick it up Kazooie will remark on the egg, and it will be added to a new menu in your totals known as Stop'N'Swop thus giving it its title which would stick to this very day.
Step 2: The Mystery Blue Egg
To find this egg, as before go to the sandcastle, kill the Armored Snippet, and enter the sequence (beginning with the word cheat which for some reason, moos,) ADESERTDOOROPENSWIDEANCIENTSECRETSWAITINSIDE. While not complicated, many were stumped to find nothing in the room but an old sarcophagus, in front of it however, is a hexagonal golden pad, pound this and the sarcophagus opens, collect the blue egg inside as before (there are no traps, although this level is notorious for them.)
Step 3: Mystery Green Egg
To find this egg, return to the sandcastle as before, enter CHEAT, enjoy the mooing noises, and then enter the sequence AMIDSTTHEHAUNTEDGLOOMASECRETINTHEBATHROOM. You will be shown a cutscene of the green egg on a toilet, (For some reason named loggo.) Entering the bathroom on the second floor of the mansion (found after breaking a lighted window) you will hear the fanfare and music, then you may jump to the top of the toilet, (you only get flushed down after being transformed into a pumpkin so don't worry) then you can collect the egg, and return to the sandcastle again.
Step 4: Mystery Cyan Egg
To find the blue egg, enter the word cheat (it will always moo) and then enter the sequence DONTYOUGOANDTELLHERABOUTTHESECRETINHERCELLAR. you will see a scene of the egg on a pedastal of sorts, go to the cellar of Mad Monster Mansion and the barrels cap will be gone, go into this barrel and walk through a shortish tunnel, you will end up in a puddle of water (or something like that) and you can splash through that to get the egg. Congratulations you are more than halfway done.
Step 5: Red Secret Egg
To access this item, enter CHEAT (yes it still moos) into the sandcastle, followed by the sequence THISSECRETYOULLBEGRABBININTHECAPTAINSCABIN. You will see a cutscene of the egg on the bed, then you can go to rusty bucket bay and begin smashing portholes on the side of the ship with the rat-a-tat-tap (did not make up that name Rare did) and soon you will find the captain's cabin, fairly straightforward, then you can go back to the sandcastle for the next code, but you've got a long trek after that.
Step 6: Yellow Secret Egg
To access the final egg and the near completion of Stop'N'Swop you must go to the sandcastle (for almost the last time) enter CHEAT (moo) followed by the sequence NOWBANJOWILLBEABLETOSEEITONNABNUTSTABLE, again the cutscene of the egg on Nabnut's table, go and grab the egg, and return to the sandcastle for the last time.
Step 7: Ice Key
To obtain the final item and complete the lucky 7, you must go to the sandcastle and enter CHEAT (MOO!) then enter NOWYOUCANSEEANICEICEKEYWHICHYOUCANHAVEFORFREE and you will see (for the final time so enjoy it) a cutscene of the key, freed at last, so run to wozza's cave. and get the key, then bask in the glory of the completed Stop'N'Swop.
Step 8: SUCCESS!
Congratulations, you've done it, you've found the legendary stop in swop. Now, you can say you have beaten the game 100%