One mole is equal to avagadro number
Avagadro's number = 6.023 X 10^23
So it is a big big number. For pens or paper clips we do not need such big unit to express any figure.
Hence we cannot count the normal pens or pencils type macro objects in terms of moles
The mole is used for atomic level particles where in a small amount such large number of identities are present