Egg case? There's no egg cases but there is a coin case, seal case,fashion case and poffin case.
The fashion case allows you to store fashion items that you can use to dress up your Pokemon. If you go to the top end of the tunnel in Goldenrod city there will be a camera set up. Just talk the people at the till and they will tell you the rest.
Ok,After you beat the firs gym in orbuegh return to Jublilife and head north (HEAL YOUR POKEMON) You will have a battle,then a man comes along and gives you it
Every 200 steps in Amity Square in Hearthome city and you can get backgrounds in the lottery in Jubilife City
A fashion item that is contained in your case.
Your PC (in the game)
walk around amunity square and talk to your Pokemon
Go to Hearthrome, and go into Amity Square with a 'cute' pokemon, (eg pachirisu) where you can walk your Pokémon. Talk to your Pokémon every 200 steps and they'll be holding something
U get it at the right of solaceon
Don't do it! It will mess up your ds! It messed up mine and a lot of people say it messed up theirs too! DONT USE A R!
in the menu where they show the pokemon on the case press up+select+b
If you get a lot of ribons you can go to the resort area and in there you can buy more ribbons and there is is a spa treatment so it makes your Pokemon more friendly. It also gets you items for your fashion case. ( they only give you ribons of each type of contest )