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There's cheap 35mm ones but I've never heard of cheap 110 ones (there's adapters from 35 to 110 for the more expensive scanners, but this route will likely be over your budget)..
..remember you can "scan" film using a digital camera as well though (if you have a somewhat recent smartphone this will most likely be sufficient / actually really good) -
you need a light table (check ebay / classifieds, or DIY with some light source & frosted glass that gives even light under the negatives).
The fiddly bit will be to hold the negatives flat, frankly holding them down with, say, two steel rulers will probably work better than all the plastic negative holders the aforementioned scanners use.
Is there such a ting as a cheap 110 & 35mm negative scanner? My parents have just found a load of my old negatives and I don't have the actual prints. I would love to be able to scan them in on a budget.