Make new Attribue called "Condition" and set values for it as you wish. Make it dropdown.
Don't use products internal condition and hide it from product listing page.
When making a product -> New Product - enter name, click save. Then enter all your other information, upload images of the toy in different conditions, click save. Go to Combinations. Create your combinations one by one or by the Combinations generator. At this point if you create them one by one you can assign images for this combination (system shows already uploaded images that you saved in the previous step). If you use the combinations generator you have to go in each of them one by one and assign the needed images. Click save and exit the product.
Go FO and select from the drop-down in the product listing the needed combination for "Condition", the system will hide all the other images.
If you need "Combination" to show in the layered navigation module so you can search with the filter when in the categories as customer you have to make a tick for it inside the module filter template. Click save and reindex all indexes.