Perhaps take a look a D-Cloud anyway. I think quite a few of the demos like this might be publically accessible (provided that you have a free Cisco username).
Love the solutions from DarrenOC and PhilipDAth! D Cloud is great as a partner. We also provide other on-ramps to try things out in a demo environment even if you're not a partner.
As part of our free Meraki Platform Fundamentals course on Learning Hub available to anyone with a Cisco login, you can try things out in a demo dashboard as you learn about them at the same time - build your skills while getting hands-on experience!