Tablet computer and iPod are both covered by a good smartphone. No point in taking your whole wallet either - just a key, ID and a bit of cash are fine.
Far too much underwear, too. 3 socks will do, one pair of boxers for wearing off the bike, two pairs of cycling shorts for wearing on the bike. Two jerseys isn't strictly necessary either but it's nice not to stink. Merino wool can be re-worn a few times before it starts to smell. Canvas shoes or flip-flops don't weigh a lot either.
Cutlery can be combined into a spork. If you carry a lightweight multi-tool then this will have a knife on it.
Instead of full weather gear, just a showerproof/windproof jacket will probably do - the kind that packs down into a little ball.
It's fun to weigh stuff, then drill holes in it and weigh it again. It doesn't really reduce the weight but it's fun nonetheless.
Tools are also a consideration - work out what allen keys you need to do all the bolts on your bike and take them. Replace hex nuts with allen nuts if you can, so you don't have to take spanners as well. That, a puncture repair kit, a spoke wrench, and some cable ties should be enough. Also perhaps take a spare chain link (and chain splitter). And perhaps a spare inner brake cable (already trimmed to length so you don't need to carry a cable-cutter).
Tablet computer and iPod are both covered by a good smartphone. No point in taking your whole wallet either - just a key, ID and a bit of cash are fine.
Far too much underwear, too. 3 socks will do, one pair of boxers for wearing off the bike, two pairs of cycling shorts for wearing on the bike. Two jerseys isn't strictly necessary either but it's nice not to stink. Merino wool can be re-worn a few times before it starts to smell. Canvas shoes or flip-flops don't weigh a lot either.
Cutlery can be combined into a spork. If you carry a lightweight multi-tool then this will have a knife on it.
Instead of full weather gear, just a showerproof/windproof jacket will probably do - the kind that packs down into a little ball.
It's fun to weigh stuff, then drill holes in it and weigh it again. It doesn't really reduce the weight but it's fun nonetheless.
Tools are also a consideration - work out what allen keys you need to do all the bolts on your bike and take them. Replace hex nuts with allen nuts if you can, so you don't have to take spanners as well. That, a puncture repair kit, a spoke wrench, and some cable ties should be enough. Also perhaps take a spare chain link (and chain splitter). And perhaps a spare inner brake cable (already trimmed to length so you don't need to carry a cable-cutter).
You should also take a book to read.