Get a sturdy tray with a rim.
I would recommend a model that can be cleaned easily (e.g. plastic) and is rather sturdy, so that it doesn’t warp or bend when it’s lifted up or set on the bed. That will give you basically a “table without legs”, or a solid surface on which you can place lots of different things that are prone to spilling, rolling away or ...
To reheat such things, my father would
Put the roll into a wet brown (kraft) paper bag.
Roll or fold the open end of the bag closed
Put it into a pre-heated oven to warm.
(The wet paper bag kept the roll moist while the contents were reheated.)
When the bag was dry, the roll was ready.
Unroll the roll and enjoy.
Good luck and Bon appetit.
If the premise is really “as it was when I bought it”, the answer is “you can’t”.
If you are ok with the yufka getting a bit (or quite) soggy and veggies or salad limp, you can pop the whole roll, still wrapped in the foil, into a warm oven. Everything between 80C and maybe 150 C should work, heating time depends on various parameters like thickness of the ...
Although Stephie's answer about the bed tray (or bed table) is probably the best answer, I also want to suggest a very inexpensive lifehack. If you have plastic trash bags, you can lay one out underneath your food before eating. It is much bigger than paper or butter paper, and liquids will not penetrate it. Also, plastic trash bags are very inexpensive, can ...
Frameshift: You want to boil an egg easily, so your first instinct is the microwave. Instead may I recommend an even easier way, the rice cooker!
Put a cup of water in the bottom of the cooker and place as many eggs as you want in the plastic basket that comes with it. Then press "steam" for 15 minutes. Your eggs are done!
I've recently discovered rice ...