I guess the tiling thing as a challenge was bound to get a retort. 
Can’t argue Leigh’s comment- A plain offset with a bit of cloning to tile job is easy. 
I was thinking about taking it a bit further… Some haven’t tried their hand at normal maps for ex, and there are a few ways to go about that including working in ZBrush to manually creat your map.
Or imposing limits. Make a really good 256x256 tile with ground layer mask and detail map.
Sometimes I’ve found concentrating on the simple things and taking them as far as you can at your current level is a good way to learn…Heck there’s one site that does a sphere challenge and it’s neat to see what people do on that too.
I think the celebrting mediocrity comment is a bit much…and not all beginners are inspired or even take part in advanced challenges.
Here’s an example I have had recently. It was a very complex model, and as I mentioned erlier, only a few even made it past the unwrap stage.
I know CGT is all about a very high standard…isn’t it possible to lighten up a bit too, maybe instead of a celebration of mediocrity it will expand our ability to find “complexity in a simple thing”. :shrug:
Either way, maybe the suggestions are out of line. If so, just say the word and I’m happy comply on the parts that aren’t acceptable. 