How about using balloons like manga characters?
Balloon stamp: approx 3cmx3cm (thickness 2.5cm)
(Please note that its handmade product, so the size will be a rough indication)
(The color of handle might be different from the picture)
Eraserstamp "Horu-navi-firm-" (SEED)
It is more solid than the regular erasers, so it will not degrade soon.
The handle is made of wood.
It is all handmade, so the stamp may be different from the picture.
All the stamp is made only one for you.