If you have a garden shed full of your ex-partner’s tools and DIY equipment and they have no interest in removing them, it’s worth exploring the less painful routes to ridding yourself of them and ceasing those constant, niggling reminders.
Whatever you do, don’t throw the items out with the rubbish!
A little bit of internet research will uncover several charities who would benefit enormously from your generosity and would be delighted to take them off of your hands. A great many of them will service and repair said tools and send them overseas to countries where these commodities would be greatly appreciated and put to good use.
Hold on to a few bits if you must, but only if you think you might need them, then clear the rest out and enjoy the cleansing process of reclaiming your space.