As far as Cub equipment ... the tiller is the only one I can think of that would use the sleeve hitch (most of it anyway). The tiller comes with the mount and lift actuator of the sleeve hitch (it doesn't actually use the sleeve portion).
Now that I have confused you (I think I confused myself too) the sleeve hitch can be used with a mold board plow, disc, cultivator, rakes, back blades, planters, etc. Brinley is a common name brand for these implements ... there is another but I can not think of it right now.
If you are handy with a welder (or have one and are just learning), are creative, and have access to some scrap steel ... you could dream up many things that could be attached to the sleeve hitch.
Ed