bonus_name
bonus: #
Usable by: Those who can use this.
Name: Bonus name
Illustration: bonus_name.png

pencil
bonus: +1
Usable by: 
Name: Pencil
Description: Versatile writing utensil.  When used together with Napkin or Back of an envelope, the total bonus is +10.

napkin
bonus: +1
Usable by: 
Name: Napkin
Description: Can be used to write on.  When used together with Pencil, the total bonus is +10.

back_of_envelope
bonus: +1
Usable by: 
Name: Back of an envelope
Description: Can be used to write on.  When used together with Pencil, the total bonus is +10.

moebius_strip
bonus: +2, +4 for topologists
Usable by: 
Name: Möbius strip
Description: It has only one side!  If you show it to a monster, you may be able to kill it while it is pondering over how this is possible.

klein_bottle
bonus: +3, +6 for topologists
Usable by: 
Name: Klein bottle
Description: 

topologists_glasses
bonus: 
Usable by: 
Name: Topologist's glasses
Description: When wearing these glasses, you see the world as a topologist would.  You are treated as a topologist for all purposes.

fake_beard
bonus: #
Usable by:
Name: Fake beard
Description: When wearing this, you are treated as a professor for all purposes.

bonus_name
bonus: #
Usable by: Those who can use this.
Name: Bonus name

bonus_name
bonus: #
Usable by: Those who can use this.
Name: Bonus name

bonus_name
bonus: #
Usable by: Those who can use this.
Name: Bonus name

bonus_name
bonus: #
Usable by: Those who can use this.
Name: Bonus name