Higher tier rewards? (Patreon)

I've been playing around with ideas for new rewards, and naturally I need to ask you guys as well. 

I've been looking to make some higher tier rewards ($5 - $20) range, and some ideas involve making personalized rewards, but at the same time I'm a bit reluctant, since I tend to get very involved with personalizing and may spend way too much time on them, to the point where it distracts from other works.

I've also been making a lot of my posts public because I want to see if it might help get people more interested in looking through my Patreon, since right now it's all basically closed off.

Is there anything particular rewards you guys want to see? Or would be willing to pay more for?

Also, I wanted to thank you guys for your contributions for March. Every bit helps and you guys are always welcome to talk to me about whatever.