Items

These are the items you can get on these versions.
I'll list them on separate categories, depending on how they can be obtained:

Shop
Codes
Special gifts
Passwords
Souvenirs

Shop

These are the items you can just buy normally at the activities menu's shop.
Most of the items can be used as many times as you want, but some of them can only be used once. Check out the notes column to know which ones these are.

Item	Price	Notes
Ball	500	Babies cannot use it.
Pencil	200	Only adults can use it. Can only be used once.
Wig	2000	Only adults can use it.
Sunglasses	1600	Only adults can use it.
RC heli	2400	Only adults can use it.
RC UFO	4800	Only adults can use it.
Guitar	8000	Only adults can use it.
Piano	28000	Only adults can use it.
Bow	1000	Only adults can use it.
Skirt	2200	Only adults can use it.
Building blocks	1400	Only teens and adults can use it.
Cap	1200	Only adults can use it.
Maracas	1600	Only adults can use it.
Jeans	2800	Only adults can use it.
Soccer ball	2000	Babies cannot use it.
Cuckoo clock	7000	Can be used at any stage. Try using it right before the hour changes!
Chest	300	Can only be used once. You might find money or an item inside… if you're lucky.
Fishing pole	600	Used to fish up a fish, Gotchi points… or trash. Will break after catching something good.
Mirror	4300	Only adults can use it.
Make-up	200	Can only be used once. Only adults can use it. Can only be used if you have a mirror.
Stereo	9000	Can be used at any stage.
CD 1	2000	Can't be used without a stereo. Lets you choose between two tracks.
CD 2	2000	Can't be used without a stereo. Lets you choose between two tracks.
Shirt	2200	Only adults can use it.
Ticket 1 (Canada)	12000	Only adults can use it.
Ticket 2 (New York)	10000	Only adults can use it.
Ticket 3 (Japan)	20000	Only adults can use it.
Ticket 4 (France)	10000	Only adults can use it.
Ticket 5 (Africa)	15000	Only adults can use it.
Doll	2200	Only girls will like it.
Umbrella	1800	Only adults can use it.
Lamp	900	Might vanish after use.
Roller skates	3000	Only adults can use it.
Action figure	2200	Only boys will like it.
Trumpet	6400	Only adults can use it.
Drum	3800	Only adults can use it.
Music	2800	Only adults can use it.
Plant	200	Can only be used once. Might alter your Tamagotchi's mood or give them Gotchi points.
Shovel	200	Can only be used once. Might alter your Tamagotchi's mood or give them Gotchi points.
UFO	50000	Only adults can use it.

Codes

These are the items you can get by using a secret code at the shop.
You can also get a steak (a food item) by using one of those codes.

There are five codes in total. You must use them all in order to get the phone.

There are clues for some of them on this very page. Try clicking some of the items!

Item	Price	Notes
Pen	15000	Only adults can use it. Works just like the pencil, but it can be used multiple times.
CD 3	0	Can't be used without a stereo. Lets you choose between two tracks.
Honey	7000	Only adults can use it. Your Tamagotchi will fall in love with the next Tamagotchi they connect with.
!!	14000	!!
Cell phone	—	You can use it to call other Tamagotchis… if you know their number.

Special gifts

These are the items the Gotchi King might send you by mail.
They can only be used once.

Bouquet

Ring

When TamaTown still existed, you could also get three special souvenirs from the Gotchi King by donating a lot of Gotchi points (200,000 in total.) After doing that, you'd get another item:

Royal costume

Passwords

There are two items you can only get by using a password:

Play house

Slide

Souvenirs

There are 32 souvenirs.
Some can still be obtained by using the right password, but we still don't know how to unlock all of them.
I've learned some things about them thanks to [this thread from Tama Zone.] You can see all my findings on the list below:

#	Souvenir	Requirement
01	Passport	Enter TamaTown.
02	Brochure	At the Town Hall.
03	Car	At the mall. Only on the first day of the month.
04	Picture book	At preschool.
05	Organ	At preschool.
06	Graduation cap	At school. Only if you have an adult Tamagotchi that has already graduated.
07	Graduation cape	At school. Only if you have an adult Tamagotchi that has already graduated.
08	Dumbells	At Patchi Forest's gym.
09	Treadmill	At Patchi Forest's gym.
10	Maple leaf	From the travel agency, after going to Canada.
11	N. Y. shirt	From the travel agency, after going to New York.
12	Sumo	From the travel agency, after going to Japan.
13	Eiffel Tower	From the travel agency, after going to France.
14	Elephant	From the travel agency, after going to Africa.
15	Scepter	From the Gotchi King, after donating 20,000 Gotchi points.
16	Sword	From the Gotchi King, after donating 70,000 Gotchi points.
17	Shield	From the Gotchi King, after donating 200,000 Gotchi points.
18	Stamp	At the post office.
19	Box	At the post office.
20	Smoothie	At the shop in GuruGuru Town.
21	Jug of milk	At the shop in GuruGuru Town.
22	Hammer	At the hardware store in Mame City.
23	Ladder	At the hardware store in Mame City.
24	Drill	At the hardware store in Mame City.
25	Poster 1	After watching a movie at the Tama-Tower.
26	Poster 2	After watching a movie at the Tama-Tower.
27	Photo ID	At the office. Only if your Tamagotchi has a job.
28	Action figure	At the toy store, after winning a game.
29	Gold Disk	At the music store. Only if the current day of the month ends in 5.
30	Wedding dress	At Forever Tamagotchi. Only if the current day of the month ends in 0.
31	Trophy	At the bank.
32	Laptop PC	At the office.