This is an easy-to-make Lego camera slider/dolly which uses pieces from a Lego Mindstorms set. There's not much to it & you can make it in about 15 minutes! What I like is that you don't have to a straight slide/pan, you can also do a curved shot, which looks great.
If the video gets a lot of interest, I'll put the design up on Mecabricks! Let me know in the comments if you're interested!!