Due to the fact that I've got a full machine shop at home, In the 10 plus years that I've owned my Land Cruiser I've made a few different specialty tools. Below are a few photos of some of the seal and bearing race drivers I've made. I know, i know, some people will say why didn't you just buy these tools, i say, why buy something when you have the tools, and skills to just make them yourself.
First up are 2 wheel bearing race drivers top of the photo, and a knuckle bearing race driver bottom of the photo.
Next is a piloted wheel bearing seal driver on the right, along with a counter bored piloted transfer case output seal driver on the left.
Next is a piloted seal driver for the power steering pump shaft seal, along with a piloted seal driver for the front inner axle seal. That seal driver is fitted with a long threaded handle so you can reach inside the axle housing to install the seal.
Next are 2 custom seal drivers (the one in the bottom of the photo is double ended) that have counter bores machined into them to fit the raised dust lip (you can see the raised lip of the new seal sitting on top of seal installer) on the new seal so you don't damage the seal when installing it.
And last is another photo of the custom double ended (works with 2 different sized seals) counter bored seal installer that fits over the piloted end of the wheel bearing seal installer to center the tool when installing a new seal.