Pesky rubber stops

I usually give the underside of the bonnet a wipe down after a wash. I have found that the rubber stops fall out if accidentally hooked by the leather. Usually I spot the rubber falling out of its mount and screw it back but one fell out and I failed to spot it. The one missing is the smaller of the two and near the outer edge of the bonnet. Are they easy to buy and easily available from the Skoda parts bin?