I am a fan of the "Extreme" water bottle also, it's light and portable and you can go through about 26 gal of water before you need to replace the filter.
That's a lot of water to drink. It is priced quite reasonably too.
Rather than spend my hard earned pennies on those cool Shoot-N-See targets or even the preprinted targets at sporting goods stores, I save a few bucks for weekend plinking sessions by using paper plates as targets. A 100 count pack of paper plates costs less than a 10 count pack of preprinted targets.
If you are playing with something like a semi auto AK, or building a young shooters confidence with a 22 or shotgun, those big eight inch blanks are perfect for putting holes in all...