If you’re looking for a way to easily and reliably get to your machine but you’re stuck with a dynamic IP address, you might look into No-IP.com. They provide a service at different levels from free to costing, depending on how much you want.
If you want to be able to SSH into your machine, setup an FTP server temporarily, or host some files you can use the free service. It will install a small service in the background so that it can synchronize your current IP address to their URL resolving service. You can get a sub-domain to a handful of different domains, like 404tempsite.no-ip.org.
If you’re looking for status reports and more complex resolving, mail, or domains, money will start to get involved. Their free service seems pretty spiffy though, so it might get you by for any temporary projects you’re worked on.