CHEAP wireless switch to control smart bulb?

Welcome!

You’re going to have to be more precise about what “cheap” means. To most people in the community, the hue dimmer switch is an inexpensive device because it’s under $25.

That said, there are some other options, particularly the Xioami brand from China. They can be glitchy, hard to pair, and are not fully certified which means they might stop working in the future, but they are popular just because you can find them for under $12.

See the following FAQ. It has several dozen Button devices which can work with SmartThings, including all of the ones that have already been mentioned in this thread. Read the descriptions carefully, because some are battery operated and some are mains powered, but you should be able to find something of interest. :sunglasses:

( This is a clickable link)