There are several ways to make an Inkjet printed object last longer.

The easiest is to spray it with several coats of clear fixative which is basically a flexible clear varnish.

The second is to cover it with a clear adhesive film - the stuff for covering books is ideal.

The third is to print it "Flipped" (reversed) on Inkjet Film so that the image is on the inside - as you do for iron-on transfers (I suppose transfers are a fourth way.)

Unfortunately Inkjet Ink bleaches out when exposed to too much direct sunlight - over here in the UK, that doesn't happen so much !