On aliexpress, search for "demolition heating" and there are really cheap ($5 or so?) heating plates that I believe are used for removing SMD LEDs.

Not sure why they'd need to remove SMD LEDs, but whatever.

They are "PTC" which means they top out at a certain temperature, usually 260 degrees.

I would recommend using an inline fuse holder for some semblance of safety though.

One of these, a lamp cord, some solder paste and a toothpick, and you can easily assemble SMD boards.