If you want to make really quick and easy ice cream the best thing to do is to buy some really good quality ready-made custard (I use M&S ). let it churn to get almost frozen then add your own favorite flavours. Here are some of mine
1) crushed and whole rasps for raspberry ripple. also works with strawberries/blackcurrants/gooseberry etc, but you may want to add some sugar to the fruit and cook it down a liitle first
2) chocolate sauce and choc chips
3) melted white chocolate and whisky
4) toasted brown bread crumbs, cinnamon and honey
5) mango & passionfruit (push the fruit pulp through a sieve first.
6) any crushed cookie or sweeties like chopped up fudge.
keep experimenting! good luck