Des timbres aux chaussures - what's that?
Please, help me understand.
3. J'ai toujours gardé plein de trucs, des timbres aux chaussures. (Edito, B1, p. 117, ex. 2.)
The task was to understand, what leasure the person is speaking about.
OK - collecting things. I understand.
But what does it mean - 'des timbres aux chaussures' ??? I looked through the dictionary - no result of course. I even googled it and saw strange things.
Aidez-moi SVP !!!