I am a newcomer to electronics design and I'd really like to start fiddling with making my own circuits. I have a raspberry pi which has both I2C and SPI interfaces, and I'm wondering if there's any classes of older equipment that might have these sorts of chips?
I don't have the equipment to desolder or handle surface-mount components properly, so anything I'm trying to take chips from would need to be through-hole.
I have many older computer systems laying around, I'm assuming that due to the prevalence of SMBus that there's likely some of those chips on a motherboard that could be salvaged.
Are there any better places to look for I2C or SPI chips?