I mounted a router onto a radial arm saw chassis. It works like a router table but you can see the work. It cuts straight grooves and dados with ease, and makes accurate joinery. It can also double as a jointer or planer in a pinch. I can also use it as a pin router or pattern router with a pin that mounts in the table. Due to the extreme versatility I would very much recommend it over a router table, especially in a small shop.
It’s an angle grinder with a cutoff wheel. You can get one from any hardware store.