Ideas for the divine who are interested in worshipping themselves, but unsure of where to start.
Devotional jewelry, or jewelry worn in expression of faith. This can be anything from a necklace you resonate with, handmade or otherwise, all the way down to keychains presenting your image, whatever that may mean for you.
The burning of a candle that corresponds to who or what you are. A step further would be sigils carved into the wax, color symbolism, and (safely) added herbs.
An altar. Doesn't have to be a big production, pocket altars and shoebox altars are common. Even digital altars, which can be a picture collage, a document with your writing, or even a playlist.
Offerings. Can be as simple as buying yourself a treat or as elaborate as creating a ritual of passing something over to yourself. Making food for yourself can also be a part of this. Creating art for or of yourself can be a part of this.
If you have a color that's tied to your identity, you could try adding it to your wardrobe or your space. The same could be said for a shape or symbol.
If you're into forms of divination, you could try tuning into yourself as a source of information. Even if you don't particularly care for those things, it might be an interesting test of self reflection.
Journaling and scrapbooking are always a good start for developing a more stable relationship with yourself. It could be about your divinity, it could be about other things.
Create a blog that's all about you. Post art, poems, whatever it is your heart desires as a form of devotional action for yourself.
If a specific object like crystals, rocks, fossils, pens, etc, is something you find connected to yourself, start a collection.
And, of course, taking better care of yourself when you can. Drinking more water, brushing your hair... it can be finally picking up that piece of trash in the corner of your room. It can be brushing your teeth, or just swishing water in your mouth to remove the surface layer of gunk. It could be splashing water on your face. It could be changing out your clothes. It could be reminding yourself that you're worthy of being alive.