Information From: https://gamefaqs.gamespot.com/gba/922156-warioware-twisted/faqs/36004

Stage Specific = Souvenir can only be acquired in this stage.
Microgame unlocks = Must have the microgame registered to get the Souvenir

Type               | ## | Prize Name           | Appearance Condition

=== Mona ===
== Stage Specific ==
Instrument         | 14 | Purple Fan           | None in particular.
Figurine           | 11 | Mona                 | None in particular.
Toy                | 18 | Chic Pen Light       | None in particular.

== Microgame unlocks ==
Game               | 17 | Sew Hard             | Register Mona's Microgame #14 [Sew Easy] in Spindex.

=== Jimmy ===
== Stage Specific ==
Instrument         | 15 | Cream Fan            | [Jimmy T.] stage clear.
Figurine           | 12 | Jimmy                | [Jimmy T.] stage clear.
Toy                | 19 | Busy Pen Light       | [Jimmy T.] stage clear.

== Microgame unlocks ==
Record             | 04 | One Step At A Time   | Register Jimmy's Microgame #23 [Road Work] in Spindex. (Record name is apparently a typo; the music played is an extended version of Road Work)
Game               | 09 | Stabs in the Dark    | Register Jimmy's Microgame #14 [Stab in the Dark] in Spindex.
Game               | 14 | Pillow Fight         | Register Jimmy's Microgame #15 [Self-Defense] in Spindex.

=== Kat & Ana ===
== Stage Specific ==
Instrument         | 16 | Light Blue Fan       | [Kate & Ana] stage clear.
Instrument         | 17 | Peach Fan            | Instrument #16 [Light Blue Fan] unlocked.
Figurine           | 13 | Kat                  | [Kat & Ana] stage clear.
Figurine           | 14 | Ana                  | Puppet #13 [Kat] unlocked.
Toy                | 20 | Vigorous Pen Light   | [Kat & Ana] stage clear.
Toy                | 21 | Docile Pen Light     | Toy #20 [Vigorous Pen Light] unlocked.

=== Dribble & Spitz ===
== Stage Specific ==
Instrument         | 18 | Indigo Fan           | [Dribble & Spitz] stage clear.
Instrument         | 19 | Sky Fan              | Instrument #18 [Indigo Fan] unlocked.
Figurine           | 15 | Dribble              | [Dribble & Spitz] stage clear.
Figurine           | 16 | Spitz                | Puppet #15 [Dribble] unlocked.
Toy                | 22 | Reassuring Pen Light | [Dribble & Spitz] stage clear.
Toy                | 23 | No Regret Pen Light  | Toy #22 [Reassuring Pen Light] unlocked.

== Microgame unlocks ==
Instrument         | 12 | Drum Kit             | Register Dribble's Microgame #13 [Beat Down] in Spindex.

=== Crygor ===
== Stage Specific ==
Instrument         | 20 | Water Fan            | [Dr. Crygor] stage clear.
Figurine           | 17 | Dr. Crygor           | [Dr. Crygor] stage clear.
Toy                | 24 | Curious Pen Light    | [Dr. Crygor] stage clear.

=== Orbulon ===
== Stage Specific ==
Instrument         | 21 | Cherry Blossom Fan   | [Orbulon] stage clear.
Figurine           | 18 | Orbulon              | [Orbulon] stage clear.
Toy                | 25 | Cool Pen Light       | [Orbulon] stage clear.

== Microgame unlocks ==
Instrument         | 11 | Guitar               | Register Orbulon's Microgame #17 [Guitar Solo] in Spindex.         
Game               | 08 | Astro Boomerang      | Register Orbulon's Microgame #11 [Boomerang] in Spindex.

=== WarioWatch ===
== Microgame unlocks ==
Game               | 13 | Mega Micro Golf     | Register WariWatch Microgame #11 [Micro Golf] in Spindex.

=== 9-Volt & 18-Volt ===
== Stage Specific ==
Instrument         | 22 | Pure White Fan      | [9-Volt & 18-Volt] stage clear.
Instrument         | 23 | Skintone Fan        | Instrument #22 [Pure White Fan] unlocked.
Figurine           | 19 | 9-Volt              | [9-Volt & 18-Volt] stage clear.
Figurine           | 20 | 18-Volt             | Puppet #19 [9-Volt] unlocked.
Toy                | 26 | Glittery Pen Light  | [9-Volt & 18-Volt] stage clear.
Toy                | 27 | Quirky Pen Light    | Toy #26 [Glittery Pen Light] unlocked.

== Microgame unlocks ==
Record             | 14 | Super Mario Bros.   | Register 9-Volt's Microgame #7 [Mario Bros.] in Spindex. (weird it's not "Super Mario Bros." that needs unlocking, typo maybe)
Record             | 15 | Metroid             | Register 9-Volt's Microgames #2 [Metroid-Morphball] and #21 [Metroid-Samus] in Spindex.
Record             | 16 | Balloon Fight       | Register 9-Volt's Microgame #13 [Balloon Fight] in Spindex.
Record             | 17 | Wrecking Crew       | Register 9-Volt's Microgame #4 [Wrecking Crew] in Spindex.
Record             | 18 | Kid Icarus          | Register 9-Volt's Microgame #15 [Kid Icarus] in Spindex.
Game               | 05 | Wariobike           | Register 9-Volt's Microgame #8 [Excitebike] in Spindex AND [Warioman] stage clear.

=== Warioman ===
== Stage Specific ==
Instrument         | 13 | Ivory Fan           | [Warioman] stage clear.
Instrument         | 24 | Sky Blue Fan        | Instrument #13 [Ivory Fan]
Figurine           | 10 | Wario               | [Warioman] stage clear.
Figurine           | 21 | Warioman            | Puppet #10 [Wario] unlocked.
Toy                | 17 | Stinky Pen Light    | [Warioman] stage clear.
Toy                | 28 | Stinky Garlic Pen   | Toy #17 [Stinky Pen Light] unlocked.

== Microgame unlocks ==
Game               | 04 | Eternal Wario Hockey | Register Warioman's Microgame #24 [Wario Hockey] in Spindex.
Game               | 06 | Apple Assault        | Register Warioman's Microgame #21 [Wee Wario Blast] in Spindex AND [Warioman] stage clear.
Game               | 07 | Cyclone Shuffle      | Register Warioman's Microgame #15 [Cyclone Kick] in Spindex.