There are a lot of bad tracts out there so use wisdom in selecting these
Oh, so sadly true. I do street evangelism, too. I struggle to find tracts with a clear gospel message that do not either attempt to add something to the message or to dumb it down.
I wrote my own one Christmas for a group holiday outreach, because I couldn't find any with a clear gospel presentation that were in stock.
"What are you thoughts of using a prayer stand as an outreach tool. You would ask people if they wanted prayer then be able to share the gospel with them. Here is video of Prayer Stand: The Prayer Stand - YouTube"
I'm not fond of gimmicky things, but this looks very practical, as long as there is an easy way to weight it down so it doesn't blow over. I have friends who use tables and their tracts blow away all the time. They are also heavy to drag around and require more space than this would. I am not able to stand in one place for any length of time, so I walk when I hand out tracts and stop when I find people interested in a conversation. If you are able to stay-put, this looks like a good idea.
As others mentioned, it would be important to keep the focus on prayer - deliver what is advertised, and segue into a gospel centered conversation only if the person expresses interest. I try to have a list of faithful churches in the area when I do outreach. I have have MANY people ask where they can attend church. Sadly, when we do outreach in inner city Denver, there are very few faithful churches (that I have found) to refer them to.