Golf Your Favorite Minecraft Tool

JavaScript ES6, 353 bytes

document.write(`<p style="width:1px;height:1px;box-shadow:${'931a31b31841940a40b40c41951a51b50c50d51e53f52b61c60d60e62f63c73d70e70f71b83c82d83e81a93b92c939a3aa2ba38b39b2ab37c38c29c36d37d28d35e36e27e34f35f26f34g35g3'.replace(/.../g,e=>(p=parseInt)(e[0],17)+`px ${p(e[1],17)}px 0 #${['33EBCB','0E3F36','896727','281E0B'][e[2]]},`)}9px 9px 0 8px #4B5249"`)

This heavily abuses CSS3 box-shadows to create a pixelized version of the image, in this case the Minecraft hoe. The Stack Snippet below uses ES5 for easy testing and is somewhat ungolfed (You'll have to zoom in to see it well).

s='931a31b31841940a40b40c41951a51b50c50d51e53f52b61c60d60e62f63c73d70e70f71b83c82d83e81a93b92c939a3aa2ba38b39b2ab37c38c29c36d37d28d35e36e27e34f35f26f34g35g3'.replace(/.../g,function(e){
  return parseInt(e[0],17)+'px '+parseInt(e[1],17)+'px 0 #'+['33EBCB','0E3F36','896727','281E0B'][e[2]]+','
})
document.write('<p style="width:1px;height:1px;box-shadow:'+s+'9px 9px 0 8px #4B5249"')

CJam, 119 bytes

I've chosen the shovel.

'P3NGSGN255N]o67T"vîþáy$<OW¥ÓNZ"256b9b~99T]2/e~W%"LRI?6jêÌ'
f-":i3/f=F,_W%:)+{)/(\:~}%{G/({)S*S+oNo}%1>\:~+}G*

Test it here.

This program prints a PPM file to STDOUT.

I used this script to help with encoding the image. (This is mostly for myself if I need to reuse it later.)

The basic idea is to unroll the image along antidiagonals and then use run-length encoding. With this technique, the shovel contains the fewest runs. For reference the number of runs per image (in the order given in the challenge) is:

{60, 26, 38, 43, 37}

I'll add more explanation when I'm done golfing this.

Minecraft 18w11a (.mcfunction), 757 bytes

fill ~ ~ ~ ~15 ~ ~15 ice
fill ~13 ~ ~13 ~7 ~ ~11 cyan_wool
fill ~12 ~ ~14 ~10 ~ ~8 cyan_wool
fill ~12 ~ ~13 ~10 ~ ~11 diamond_block
fill ~11 ~ ~12 ~9 ~ ~10 diamond_block
fill ~10 ~ ~11 ~8 ~ ~9 diamond_block
fill ~3 ~ ~4 ~1 ~ ~2 dirt
setblock ~3 ~ ~4 oak_planks
setblock ~2 ~ ~3 oak_planks
clone ~3 ~ ~4 ~1 ~ ~2 ~4 ~ ~5
setblock ~4 ~ ~5 oak_planks
setblock ~4 ~ ~7 ice
setblock ~6 ~ ~5 ice
clone ~6 ~ ~5 ~4 ~ ~7 ~7 ~ ~8
setblock ~9 ~ ~10 diamond_block
setblock ~4 ~ ~4 dirt
setblock ~3 ~ ~5 dirt
setblock ~7 ~ ~7 dirt
setblock ~6 ~ ~8 dirt
setblock ~1 ~ ~2 ice
fill ~12 ~ ~9 ~12 ~ ~8 ice
setblock ~11 ~ ~8 ice
fill ~8 ~ ~13 ~7 ~ ~13 ice
setblock ~7 ~ ~12 ice
fill ~ ~ ~ ~15 ~ ~15 light_gray_concrete replace ice
fill ~ ~ ~ ~9 ~ ~10 dark_oak_bark replace dirt

Of course someone had to answer the question with Minecraft. Place answer inside of a datapack, and run with /function <packname>:<filename>. The shovel is drawn relative to you in the +X and +Z direction. Colors are wrong but I'll count that as a language limitation ;)

But the shovel is actually made out of wood and diamonds!!!!

Output