In times of crisis we all have to invent something … Kat Flint, Scottish illustrator, invented this cards to be exchanged between friends, to require a particular favor, one that can be only asked to trusted friends. Need someone to lie on your behalf? Want someone to let you win in the argument? Or endeavour to cure your hangover? With these cards you can “reserve” your favor! Because, as Kat herself says, in times of crisis, what can you give but yourself?