Hey Nanita. Why do you have to buy boxes? /is confused/ Nobody here ever buys boxes, you just go to a store and ask, some stores even have extra old boxes at the entry/exit and you can just take... If you're shy, you can ask someone else to do that...
YAY for moving to new appartment! It can be stressful, I know. So just RELAX and take it easy... It doesn't have to go so perfect or so quickly, just 'survive' it!!
Do you know anyone who can fix your tire for free? (Male relatives, friends, neighbours come to mind...) Even perfect strangers may be willing to help if you ask nicely. (And maybe offer to buy a beer or cook or bake'em something? - doesn't have to be now if you're broke, maybe after you move/recieve some money?)
YAY for a friend visiting too! I know that can be stressful too!! Can you simplify it?
If they can't stay with you, recommend hospitalityclub.org or couchsurfing or a hostel or such to them and just suggest a meetup or a few? (In your area, or THEY can see to transport/entertainment costs and invite YOU if they want?)