Russian President Vladimir Putin may be in charge of an economy in crisis, but if mobile phone covers and souvenir mugs are a barometer of popularity, he need not fear for his political future.

Moscow's annexation of Crimea from Ukraine last year has given memorabilia makers even more material to glorify a president whose image as a champion of Russian national interests in a hostile world is barely challenged in his country.

Although plenty of the souvenirs are standard tourist kitsch playing to the action-man image that Putin has cultivated since coming to power, others seem to revel without irony in the darker side of the former spy, who has suppressed political dissent and admitted to plotting in secret to seize Crimea.