Now, for science. An item to increase your science could be a big book of science, which adds 50% to your science.
The thing with science is, the skill is not the "true" science skill like in SP Fallouts (hacking, getting better intel from databases).
Instead Science is just disassembling stuff, which in my opinion counts as a mechanic action, it should be renamed if it wasn't also used to get the energy expert profession. Apart from McGyver I can't imagine anyone turning the screws in a pistols casing with a book.

So my suggestions for a "science"-tool would be
- Super Tool kit (can still also boost repair ofc) +50 science
- a handy blow torch (which btw could also be a fun fire based weapon

) +75 science
- ??
something in that direction..
EDIT: Actually I don't like the use of the skill in fonline at all – I mean how weird is that.. you need 2 different skills to make and break the same gun/armor... Instead there should be a cooler use for it.. maybe for electric door locks that can be hacked.
Or more tasks in lucrative, repeatable quests revolving around getting info from computers..