When Er in doors nags you ..you might find pitching that tent at bottom of garden very useful advice ..of course at your age bending down to get into it might be a tad difficult :lol:
I was quite serious ....have you tried a static caravan? You might end up with a lot of expense and not really enjoy it...you can get a decent tent and stuff fairly cheaply these days....young children love it in my experience...many opportunities to get away on a friday night for a lovely weekend.