"Im not a natural mother I dont think"
Have no idea if you're a natural mother, OP, but I do think that all your imagination has taken fright, and run off and deserted you! 
You live in village, so will have access to village things (streets, maybe a playpark) and more country things (open areas, wooded area, maybe a stream or two).
So forget the weather ... you're in Scotland, and you won't melt in the rain ... and, as someone has said up thread, get outside, every day!
Do a pond dip. Even the little one may well be able to catch a bug or two (and if you hang on to the back of his breeks, he'll not fall in too often ).
Make a mud slide ... get a long piece of plastic, lay it down an incline, have a few buckets of water to hand (a hose would be great, but if not, that's where a nearby burn comes in handy). Pour water on plastic, so it runs down incline. Send children sliding down after water. Tip: the more water and mud the better!
Get a big pack of coloured chalk (very cheap). Go outside with your children. Ignore children, and start to chalk huge pictures on pavement (this one works just as well on your kitchen floor, if weather really atrocious). That is ... you chalk! The kids will soon join in. Hopscotch, maybe for the older one (wee one can try), Lots of pictures. Lots of colour. Chalk the kids, if you like.
Make tin can stilts with your children. Four empty tins (two each), two small holes punched in opposite sides of unopened-end (those triangle-hole drink-can openers are great), thread a kids-arm-length of string through the holes, tie in a knot to make a loop. Child puts each foot on a can, hold string taut and tries to walk (wee one will need lots of help, but it's fun). You try it too.
Go for a picnic. An ordinary pack-a-basket, take-a-blanket, walk-into-the-country, picnic. Let children help make the picnic.
Make them a tent. Put a big sheet or blanket over a low washing rope, 'peg' down the edges (if you don't have pegs, use boulders). Have tea in your tent!
Take water colour paints into your garden (this one is fun in light rain), peg a lot of sheets of blank paper on a low washing rope. Paint them. With brushes, with hands, (with locks of your hair if it's long enough), flick paint on, flick water on, flick sand or grass seeds on to the paper, too.
Go for a walk ... a long one ... take waterbottles and a small snack and walk! Walk somewhere you don't usually walk. Talk about what you see, as you go.
I could go on and on and on ... but I better stop in case everyone thinks I'm loosing it here!!! 
There are so very many things you could do, with a bit of imagination, that cost almost nothing ... IF you just start enjoying your children!
Oh ... and OP ... do the Scottish schools not go back in just three weeks?