What EXACTLY are you claiming your ex still has and refuses to give back or owes you for?
Be very careful in what you are asking for. If this was your ex, then a lot of what you think you are entitled to could be considered gifts to her. Just because you paid for them doesn't necessarily mean you are entitled to get them back if you gave them to her as gifts.
When the judge considers the evidence, they will look at the context in which the items were exchanged. If you have no written agreements or other documentation between the both of you for repayment of debts or return of items, they are unlikely to find in your favor.