depends on the size you need but sherline tilting angle table with thier vise or something similar. Relatively cheap and easy solution.......if you are working on a small scale. Probably as small and non mill space consuming as you can get.
The sherline tilting angle table is on sale this month:
Real cheap solution for something slightly larger is a shop fox tilting vise. Do a search. Quality is not superior but as you requested a "cheap" option
I had bought one of these and sold because I found it too large for my taig but depending on what machine you are using will have an effect what you would consider small. It is not top end accuracy and quality but definately a cheap solution. I think when I bought it I signed up for thier credit card and got $30 off my purchase(which was the vise) plus free shipping so it only cost $10 at the time
These are obviosly not top end industrial solutions. The sherline, like all thier products is very well made and accurate for what it is: a miniature tool system.
Its all relative so without knowing what size your machine is.....