Although we often think of AT as computers, specialized software, and very expensive technologies, AT also includes many low tech options that may be just as or even more appropriate than the expensive, flashy version.
Below is a chart outlining some low tech options and high tech options that address the same difficulties (it is not an exhaustive list, it is only meant to provide some examples):
This site has a list of low tech AT: Low Tech examples. I found often that the low tech options listed as AT are things we considered manipulatives or instructional tools. Often we try them without considering them AT, but it's nice to have a list of simple things to try that we may have overlooked in favour of fancier, computer based AT.
This checklist is a tool designed to help teachers select the lowest tech option that assists the student. Ideally we want to find the simplest, cheapest solution, so by starting with low tech options and working up to the high tech options we are able to stop when we find a solution that works.