Bust out the duct tape, we’re going to space!
Bargain Rocket Parts Inc.
Bargain Rocket Parts adds 34 new parts to KSP, designed to build fully functional rockets out of cardboard, duct tape, plywood, and whatever else we find laying around.
It is also integrated into the tech tree, using ModuleManager to replace stock parts as the beginning tiers. The revised tech tree can be seen here. The pack includes four new science modules in addition to several types of engines, fuel tanks, parachutes, etc.
If you do not want the stock tech tree to be modified, simply delete BargainRockets.cfg in the folder and stock parts will not be rearranged in the tech tree, and the new parts will only appear in Sandbox mode.
This pack uses ModuleManager 1.5, initially created by ialdabaoth and now taken over by sarbian.
More information about this mod, including the source code, can be found here!