There are so many islands that there are endless permutations of itinerary options. A sample grand tour, which would take most of the main islands from the Southern Hebrides to the Outer Hebrides and on to the Northern Hebrides, would look something like this:
Glasgow/Edinburgh >> Kennacraig >> Islay >>Jura >> Islay >> Colonsay >> Oban >> Mull >> Iona >> Mull >> Kilchoan >> Mallaig >> South Uist >> Eriskay >> Barra >> Eriskay >> South Uist >> Benbecula >> North Uist >> Berneray >> Harris/Lewis >> Skye >> Raasay >> Glasgow/Edinburgh
A trip of this length would require 7 to 14 days, or 10 - 21 days if including Orkney and/or Shetland in the Northern Isles. My guided island hopping tours are conducted in a relaxed no-rush manner, which is perfect because the pace of life in the Hebrides and Northern Isles is much slower than the mainland and this makes them the perfect place for that 'getaway from it all' type of vacation.
For those looking for a unique island whisky tour it would be easy to incorporate visits to Islay, Scotland's 'whisky island', Jura, Mull, Skye and Orkney, visiting distilleries such as Laphroaig, Jura, Tobermory, Talisker, Highland Park, with the occasional Highland distillery, such as Oban, thrown in for good measure, to create a combined Highlands and islands whisky tour.
Of course I can tailor make an island tour for you from anything from one day (eg. Arran or Isle of Bute day trip), two/three days (eg. Islay/Jura, Mull, Skye) or a multi-day tour (eg. Outer Hebrides, Orkney and Shetland) or as many island as you can fit into two or three weeks - my record, so far, in one trip is 17 islands!