The ”100 item Challenge”, how well could you do it?

In a recent question I posted dealing with the smallest square foot a person would choose to live in, the thought came that to downsize significantly one would need to eliminate a lot of stuff. Somewhere around 2007–2008 (as far as I can tell) someone came up with the ”100 item Challenge”, where you reduce what you have to 100 items. There is no official formula but for clarity, consider an “item” as anything that is part of a set, or need to be used with something else, or makes something else useful. For example, your monitor and your PC tower would be one unit, as they are useless without one other; the printer or scanner can be grandfathered in. Tools would be a unit, a collection of baseball cards, deck of playing cards, etc. would also be one unit or item. Do you believe you could reduce what you have to 100 items?