you're a miner. so i assume you have a lot of mines. lots of straight tunnels. plant a few mushrooms every 10-20 blocks in one of the tunnels that you go through often, and harvest them as you're going by. make sure to leave a few mushrooms to regrow. no waste of time, just holding a left mouse button while you are running through the tunnel you would be running through anyways...
Or there are automatic mushroom farms.
Top view
S | | S
W P Sh Sh Sh Sh Sh ..... Sh Sh Sh ***
S | | S
W-water
S-stone
p-piston(facing left)
| - drop by 1 block
*** - is where you stand when you use the switch to turn off redstone to the piston, and water brings all shrooms to you...
This can be made double wide, and as long as redstone signal can travel.
Or there are automatic mushroom farms.
Top view
S | | S
W P Sh Sh Sh Sh Sh ..... Sh Sh Sh ***
S | | S
W-water
S-stone
p-piston(facing left)
| - drop by 1 block
*** - is where you stand when you use the switch to turn off redstone to the piston, and water brings all shrooms to you...
This can be made double wide, and as long as redstone signal can travel.