Abacus

The abacus ties together the idea of keeping count and an 'old' way of doing so. It can symbolize holding a grudge from the past that might be undermining your ability to enjoy experience. In an abstract form, the abacus could represent how you are 'counting on something' that may or may not be forthcoming. Beading on a necklace can have a similar meaning since the necklace is associated with something that hangs around your neck.