We've already offered you a selection of highly annoying gift ideas for the parent you'd like to drive slowly insane, but now we up the ante every so slightly: Here is our guide to toys that will inflict actual injury upon children you absolutely can't stand, free from worry of prosecution. (Conversely, you may actually want to avoid these toys, many of which have been identified by consumer watch lists as the most dangerous of 2011.)

Fold & Go Trampoline

What could possibly go wrong with something that looks like a cross between a geriatric walker and a trampoline? Quite a bit, apparently! Available in toy aisles and advertised as appropriate for "ages 3+," it's only once you scrutinize the fine print ("the only function on this trampoline should be a controlled bounce (exercise), for young children. No other functions should occur other then [sic] controlled bounce") that you begin to realize the awesome, toddler-launching capabilities of this anti-gravity cannon.

FOLD AND GO TRAMPOLINE by Galt America: $99.99 [Amazon]

Z-Curve Bow

2012 is going to be all about child survivalism, what with The Hunger Games debuting. Take extreme caution in choosing survival weapons for your child, however. Zing Toys' "high-performance" bow and arrow contains three arrows that, while foam-tipped, nevertheless offer ample opportunities for blinding slower, younger siblings. Yes, the herd will be thinned — but at what cost?
Z-Curve Bow: $26.99 [Amazon]

Power Rangers Samurai Mega Blade

Ah, the Mighty Morphin' Power Rangers. Who has anything but the fondest feelings towards this crime-fighting society of color-coded gimps? Their attempts to bring the art of ancient Japanese weaponry into your living room could result in an accidental appendectomy, however — particularly when this rigid plastic Mega Blade extends its entire "2 feet!"
Power Rangers Samurai Deluxe Battle Gear - Samurai Mega Blade: $26.99 [Toys R Us]

EZ Stepper Stilts

These "low rise" stilts look harmless enough, but one false layup during an all-toddler NBA championship game and your little Kobe is looking at a concussion or worse.
EZ STEPPER: $19.99 [Amazon]

The Incredible Shrinky Dinks Maker

The smell of charring plastic we associate with Shrinky Dinks bring back happy, braincell-erasing memories of our distant youths. Back then, we'd have to use an actual oven to produce the magical shrinking effect. But today, children have the ease and convenience of a Shrinky Dink factory — one that uses a 120-volt current to power a "heating chamber." Within minutes, plastic cutouts of Justin Bieber are reduced to sizes even tinier than Justin Bieber in real life! Just don't stick your fingers too far in the holes, kids, or zzzzzzzzzzzzap!

The Incredible SHRINKY DINKS Maker: $57.48 [Amazon]

Anything by Playmobil

Bisphenol A is a toxic chemical that can affect brain development and reproductive organs after long-term exposure. And guess what — it's in hundreds of toys! Including much of the Playmobil line, which means your child's Fairy Tale Pavilion may turn out to be more of a Gazebo of Sterilized Terror.
Fairy Tale Pavilion: $22.99 [Playmobil]

My First Swiss Army Weapon

This toy is actually perfectly safe, but it's just such a crowd-pleaser, we thought we'd include it anyway. Have fun, kids!
My First Swiss Army Weapon: $19.99 [Hacked Gadgets via Looking Around/TIME]

[toysafety.org, Top image via Shutterstock and Useful Toy]