100 nF is the common value for decoupling caps.
Your 10 nF ones should do as well - as long as it's ceramic type. If you really want 100 nF you better buy a bag (they're really cheap) as placing 10 in parallel is a bit much. Or buy a box of 20x20 values or so, very convenient even if many values you may never use.
And out of curiousity I looked it up: yes 0.1 pF caps do actually exist. It's the smallest available value. I do wonder what the use is as just the stray capacitance of copper traces or a solder whisker is usually way larger than that.