Any kind of project you would do in any other language :) My two favourite are either:
- an IRC bot (will get you into threading, network programming etc) or a;
- CMS starting with just basic blog functionality (i.e. authentication, talking to database to store posts etc)
The first can usually be done with just the standard libraries or at least some of the smaller ones, and the latter will get you into web programming and usually involve bigger frameworks, such as Yesod (what I'd go with), Snap, Servant etc.
Also, both of those types of projects are pretty well covered tutorial-wise.
- an IRC bot (will get you into threading, network programming etc) or a;
- CMS starting with just basic blog functionality (i.e. authentication, talking to database to store posts etc)
The first can usually be done with just the standard libraries or at least some of the smaller ones, and the latter will get you into web programming and usually involve bigger frameworks, such as Yesod (what I'd go with), Snap, Servant etc.
Also, both of those types of projects are pretty well covered tutorial-wise.