How do you attach toys on the diaper cakes?
It depends on what sort of toys it is. If it is soft toys you
can use little cloth pegs or a baby spoon. You attach the toy to
the spoon (use a rbbon to do so) and then stick the spoon in one of
the diapers.
If it is a hard toy like a car you might like to try to fix it
with several baby spoon you stick upside down in your cake and then
squeeze it in there. You can also try to just place the toy on the
cake and then wrap the cake with gift foil wrap so the toy is being
hold by the wrap and can't fall down.
See all my tips at the link below (section 'Step 4 - How to fix
your decorations').