As a tip, I highly advise against putting offerings of art work files like psds or .sai files or anything of the sort as well as ultra high resolution artwork. People can take these and do criminal things with them and get off pretty much scot-free with the excuse "it was literally given to me"

One thing I see a lot of is early uploading and a couple month delay to furaffinity but I haven't browsed around much to see other trendy ideas.

I was thinking about doing that, yeah, if I do anything 'exclusive' it'll eventually end up being available all over. The patrons just get 'first access', or whatever.

Also thought about doing adoptables or something. Maybe an oversaturated or overdone idea, but I'm still toying with all kinds of ideas.

With patreon I'm not sure if something can be done that is exclusive as it's mainly a service intended to make donating to an artist of any sort easier. I think early access material is a good idea as those who like it more than others may click in and be like "Oh hey I can see this x amount of time sooner than everyone else! neat!" sort of thing.

I've seen a couple others do little random number generator freebie contests amongst patreon supports of various levels too as something for fun.

I think one of the better approaches would be stuff that wouldn't make those who don't use patreon feel left out.

I definitely don't want anyone to be 'left out'. I'll be asking around some more while I figure things out, anyway.

Oh for sure. I'm sure you will find the right balance of things. :)