hi there, am an electronics and communication engineering student . i wanna set up a mini electronics lab aimed to work with arduino,rasberrypi,embedded systems ,basic electronics.What are the basic,project independent things should be there with ranges of values, like of course i should have resistors ,capacitors and inductors ,power supply,multimeter etc but what should be the values also about some basic transistors, diodes,555timer etc to have handy for prototyping with there component number.I just want board idea from experienced guys regarding things to add in my shopping list.