You could try burpees, pyramids ie squat - lunge pyramid 10,9,8 or dips - push up burpees. You could also pyramid by doing an excercise then running a lap of your garden. If you have small weights, 1kg or 1.5kg you could do 1 min of different arm excercises ending with a lateral hold. Or to work your butt off (as my trainer says lol) get on your hands and knees lock an approx 3kg weight behind you knee and lift your foot up to the sky for 20 repeat on the other side then do the same out to side. Then for the 3rd set do up, then out as count of 1 repeat 10 times.
For core strength you could do v sit rows - tilt back slightly, holding in your stomach lift legs and hold your arms out as if you are rowing. As you pull your arms back push your legs out. do this for the count of 20. Balance ones are also good for your core stand on one leg with a weight your comfortable with and lower it to the ground repeat 10 times & then change legs & repeat.

Thats just a few off the top of my head. Sorry if it's not what you had in mind!