Make My Own NellieCache

As you may have gathered..I am not really too keen on this Nelliecaching thinghy they have been up to- by all means those two fools can go out on their bikes ( that reminds me Twiggs needs a new wide load sticker for her arse- I pity the poor road user stuck behind that mountainous glob of lard she calls her bottom)..
They drag me out saying " Ooooh look shes all excited and barky and happy, Oh look she wants to come.. no its more the fact I am happy they are going out and will leave this 45 MPH couch potato at home to snooze..the only time I get excited is when I know they are going to the beer church and I can snaffle for porky puffs etc.
So I do the whole running off and hiding at my bed looking at the wall - i don't have peripheral vison so if i cant see them they don't exist.. ITS NOT A GAME !!!! It means I dont want to go out and traipse for hours playing neardy hide and seek with a clown that hasnt written the clues down correctly- thus meaning lots of hanging about and bum faces from Twiggs.....

I have thought how ever of sneaking out and making my own Nellie Cache which involves a trip to local joke shop to buy some fake doggy do-do...( or I could just leave one of my own ( Like TBG does to bake off and form a skin) then be gluing this to a top of a Tupperware container and burying the container with just the do-do sticking out amongst some leaves... Hmmmmmmmmmm i wonder if anyone would ever find it ????