What area of the country are your students located in?
As regards IT work experience, The Restart Project is more about hardware more than software, so I’m not sure how much, for example, mending a kettle, would add to their IT skills.
If they’re interested in technology more generally, then I’m sure that some groups would be happy to have them pair up with experienced Restarters at Restart Parties, but that’s not really the same as giving them work experience. Also, there may be safeguarding issues: not all Restarters have DBS checks, although some do.
If you’re in the London area and you’re looking for professional repair businesses to take them on then maybe the Repair Directory would be useful?
I hope some other people can chip in with other creative suggestions.