If you're currently in a situation where purchasing a kamidana is impossible, are makeshift kamidana/altars okay?
Yes! Basically the most important thing isnât so much the kamidana itself, but an item called an âOfudaâ this is the item that calls to the kamiâs energy and essence. Ofuda (only to be bought from shrines) are usually no more than 20$ USD (with shipping included) Tsubaki Gosaijin (Sarutahiko Okami-sama, Ame no Uzume no Mikoto-sama, Amaterasu Omikami-sama (Jingutaima)http://www.tsubakishrine.org/omamori/kamidana.html
Inari Okami-sama
http://shusseinarishrine.org/?goods_category=ofuda
Konpira-sama (Hawaii Kotohira Jinsha ofuda)
Tenjin-sama (Hawaii Dazaifu Tenmangu ofuda)Â
http://www.e-shrine.org/omamori.html
(This shrine also enshrines Hachiman Okami-sama and other kami, scroll down to the chart here: http://www.e-shrine.org/history.html , e-mail them for what to do about home worship for them) If you cannot afford the ofudaâŚ. one can use another item or object to act as a yorishiro, or vessel for the kami. Usually this is a sacred mirror, or something called a gohei. If you make a gohei you have to purify yourself first. In the same manner as the ofuda, take a bath and purify your physical body, and rinse your mouth. Get dressed as well and get ready as if you were going out.Second, you have to purify the paper you will use for the gohei. Put a pinch of salt on the paper itself, and pray. You do not have to recite the whole Oharae no Kotoba, but chant saying âOharae tamae, Kiyome tamae" 3 times.Since this will act as the vessel for the Kami, it has to be treated with the utmost respect and be purified properly. You should practice with scrap paper before making a legitimate one. When you make a real one, please treat it like a serious ritual/ceremony, not  a craft project or origami. Itâs for your Kami-sama, not your own personal use, so we have to be careful. Learn how to make gohei here (diagram) and this video  *note  the person is being a little rougher in the video as it is for demonstrative purposes* Sometimes a gemstone is used too as a yorishiroFor either a gemstone or sacred mirror, leaving them in the sunlight, sprinkling salt around them, and chanting Oharae tamae kiyome tamae 3 times is good before ritual use - but after they cannot be used for anything else but as a yorishiro for the kami. In the case of lacking an ofuda for your kami-sama, or unable to obtain a new one for Japan, the above is also helpful.
If you feel uncomfortable to use a yorishiro such as a gohei or other object, a framed artwork or depiction of the kami is fine as well. But when possible, it is always better to obtain the ofuda of the Kami yearly. These are in difficult scenarios and outside of Japan situations. Once you have an ofuda or yorishiro, you only need to offer water, uncooked rice, salt, and sake in front of the yorishiro or ofuda. always consume the offerings after, or use them for cooking, plants, etc. donât throw them away. always keep the altar high or at least above chest height, and clean and bright. Try to keep it de-cluttered. the simpler, the better.I hope this could help! Good luck! If you have any more questions please message me anytime.












