Maybe you already know the BOX concept : to get a box, every month, with some items related to a specific theme.
What I propose is: choose the items you wanted to receive regularly, and the periodicity (every week, every month…)
Go on my shop, look at the different categories and tell me what you want, just below ! I would create a BOX just for you, with items you want (it would be a private BOX, invisible in my shop except for you).
Of course, you could stop your subscription at any time, and hold it for the lenght you want.