Hi Casper,
Sure! feel free to connect with me through my profile.
Personally I've found projects that you yourself could use to be very educational, and more fun to work on since you're really building it for a reason.
Some random things I've built when I started Mendix:
Et cetera. If you don't have any ideas yourself, I'd highly recommend asking some family members or so – it will be an excellent exercise in gathering requirements and writing user stories, as well!