Basset Hound like anything that they can wrestle with and chew on. Some toy ideas are nylabones which last long and provide hours of chew time. Plush toy that make animal sounds are liked by Basset because they can throw them around. Lastly, laser pointer is a great tool to help your dog exercise and it can be found at any office supply store.
Our 2 bassets are 12 and they really do not enjoy toys. They prefer to just lay around with us. I might suggest the dental bones large size they love those and it takes an hour or two for them to get finished. Or a kong with peanut butter anything food related.