Computer Hardware: Building a Computer. Plans and resources for a project to build understanding of computer specifications by learning to build your own computer system: looks at what's inside the case, peripheral devices and operating systems. Aimed at KS3 but could adapt for KS2. (from TES).
When my children were younger I would keep snacks and drinks in the van for our busier days. Those snacks often went to homeless folks we would encounter in particular areas. Now that my boys are grown, I make up bags of healthy snacks (nuts, fruit, crackers, juice boxes,etc) to have ready to hand out on days I know I will be near these areas. There are quite a few homeless near the VA center in Baltimore.