Right.. this is an unusual power tool recommendation - a vacuum
http://www.axminster.co.uk/numatic-nqs350b-22-vacuum-cleaner
Very expensive.. actually it's the most expensive power tool I own.. and the most used!
Quite a sensible idea really, we got a smaller unit that is similar but axminster branded about 7years ago
If you're doing a lot of work in the garage you need something to remove the dust/shavings as it's created, and to assist in cleaning up after and a normal house vac generally won't do it.
We use ours with a variety of hoses from the 60mm+ large bore one it came with, to a 44mm one that was an option, to several hoses from cheap/dead hoovers (mainly to extend the 44mm on and let us use the tools from those hoovers).
If nothing else it's good practice for staying healthy given how stuff like MDF dust can be bad for your, so it's best to get it out of the way ASAP rather than just rely on a cheap disposable face mask.
I would also highly recommend anyone doing any reasonable amount of cutting stuff like mdf gets themselves a decent respirator, I think the ones I bought cost about £30, are comfortable with glasses and replacement filters are about £15-20 and seem to last an age.
We're in the process of completely re-organising our garage (got to put a new personal door on as well*), and the number of times I've broken our vac out to clean up behind things where dust has settled is pretty amazing, it's been on and off constantly over the last couple of weeks as I'm taking the attittude that whilst we're moving stuff now is the time to give the garage a really good clean as well, and it's more effective to hoover up the dust before it's disturbed than once it's floating around again
I may post some pictures of our garage once it's tidy/clear, as so far I've made about 5 trips to the tip in the last month clearing it and some of the garden.
*It was as cheap to buy a ready to hang B&Q PVC front door as a wood one.